This is in preparation for switching to an ES module-oriented bundler.

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/actions/toolkit/releases)
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/core/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/core)

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Bumps [@hypothesis/frontend-shared](https://github.com/hypothesis/frontend-shared) from 3.11.0 to 3.12.0.
- [Release notes](https://github.com/hypothesis/frontend-shared/releases)
- [Changelog](https://github.com/hypothesis/frontend-shared/blob/main/CHANGELOG.md)
- [Commits](https://github.com/hypothesis/frontend-shared/compare/v3.11.0...v3.12.0)

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Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.995.0 to 2.999.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Changelog](https://github.com/aws/aws-sdk-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-js/compare/v2.995.0...v2.999.0)

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Although the `delay` utility function is a small function that can
almost be in-lined, I decided to create a common `delay` function in
`wait.js` and replace all usage in tests by the new function.

This adds a mock version of the VitalSource Bookshelf reader to the dev
server. It includes only the essential aspects of the viewer's structure that
will trigger VitalSource-specific functionality.

The Guest implementation no longer has any logic which is specific to a
particular document type (PDF, HTML etc.). These details are now all
handled by the Integration implementation returned by
`createIntegration`.

This commit refactors the Guest tests to use a single Integration fake
instead of using different fakes to simulate HTML and PDF documents.

Move the logic for determining which document type/viewer integration to
create out of the annotator entry point and Guest and into a
`createIntegration` factory method in annotator/integrations/index.js

This reduces the number of places that need to change when we add new
integrations, and puts the logic for determining whether a particular
integration can be used in the current environment alongside the
corresponding implementation.

Because of the sometimes-arcane nature of grid layouts, it is sometimes
necessary to apply definite width values on grid areas (versus `auto`)
to prevent content from escaping.

This fixes a situation in which very long unbroken quoted excerpts could
blow out the column width in the Notebook.

See https://css-tricks.com/preventing-a-grid-blowout/

This was created to simulate a scenario in VitalSource's book reader,
but they changed their reader so that it no longer uses a tall frame.

This is a prerequisite for moving to a modern ES-module oriented module
bundler such as Rollup.

There is one remaining import ('preact/debug') which was not converted
because that is conditional, and top-level `import` statements can't be
conditional. That might need to use either `import(...)` or a different
approach.

This required adapting pattern library import paths due to changes in
https://github.com/hypothesis/frontend-shared/pull/200.

Remove logic that is no longer required with the current Hypothesis
client and PDF.js version.

See https://github.com/hypothesis/browser-extension/pull/658.

`String.protoype.substr` is a deprecated method (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substr). It is recommended to be replaced by `String.prototype.substring` method (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substring).

The pattern library no longer serves by default at `/ui-playground`, so
we need to set a `baseURL`.

Bumps [mocha](https://github.com/mochajs/mocha) from 9.1.1 to 9.1.2.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mochajs/mocha/compare/v9.1.1...v9.1.2)

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Bumps [@sentry/browser](https://github.com/getsentry/sentry-javascript) from 6.12.0 to 6.13.2.
- [Release notes](https://github.com/getsentry/sentry-javascript/releases)
- [Changelog](https://github.com/getsentry/sentry-javascript/blob/master/CHANGELOG.md)
- [Commits](https://github.com/getsentry/sentry-javascript/compare/6.12.0...6.13.2)

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Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.3.4 to 10.3.6.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/autoprefixer/compare/10.3.4...10.3.6)

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Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.3.2 to 2.3.3.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/2.3.2...2.3.3)

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Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.991.0 to 2.995.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Changelog](https://github.com/aws/aws-sdk-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-js/compare/v2.991.0...v2.995.0)

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Bumps [terser](https://github.com/terser/terser) from 5.8.0 to 5.9.0.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v5.8.0...v5.9.0)

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Bumps [@octokit/rest](https://github.com/octokit/rest.js) from 18.10.0 to 18.11.1.
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](https://github.com/octokit/rest.js/compare/v18.10.0...v18.11.1)

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Bumps [sass](https://github.com/sass/dart-sass) from 1.41.1 to 1.42.1.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sass/dart-sass/compare/1.41.1...1.42.1)

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Bumps [puppeteer](https://github.com/puppeteer/puppeteer) from 10.2.0 to 10.4.0.
- [Release notes](https://github.com/puppeteer/puppeteer/releases)
- [Changelog](https://github.com/puppeteer/puppeteer/blob/main/CHANGELOG.md)
- [Commits](https://github.com/puppeteer/puppeteer/compare/v10.2.0...v10.4.0)

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Bumps [core-js](https://github.com/zloirock/core-js) from 3.18.0 to 3.18.1.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/compare/v3.18.0...v3.18.1)

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Bumps [eslint-plugin-react](https://github.com/yannickcr/eslint-plugin-react) from 7.25.3 to 7.26.0.
- [Release notes](https://github.com/yannickcr/eslint-plugin-react/releases)
- [Changelog](https://github.com/yannickcr/eslint-plugin-react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yannickcr/eslint-plugin-react/compare/v7.25.3...v7.26.0)

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Bumps [postcss](https://github.com/postcss/postcss) from 8.3.6 to 8.3.8.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.3.6...8.3.8)

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I used these commands (Mac version):

```
% ag -0 -l '@.+Object' | xargs -0 sed -ri '' -e '/@/s/(.*{.*)Object(.*})/\1object\2/'
% ag -0 -l '@.+object\.' | xargs -0 sed -ri '' -e '/@/s/object\.</Record</'
% ag -0 -l '@.+object<' | xargs -0 sed -ri '' -e '/@/s/object</Record</'
```

https://github.com/prettier/prettier/issues/11482

Bumps [prettier](https://github.com/prettier/prettier) from 2.4.0 to 2.4.1.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/2.4.0...2.4.1)

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Bumps [core-js](https://github.com/zloirock/core-js) from 3.17.3 to 3.18.0.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/compare/v3.17.3...v3.18.0)

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Bumps [eslint-plugin-react](https://github.com/yannickcr/eslint-plugin-react) from 7.25.1 to 7.25.3.
- [Release notes](https://github.com/yannickcr/eslint-plugin-react/releases)
- [Changelog](https://github.com/yannickcr/eslint-plugin-react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yannickcr/eslint-plugin-react/compare/v7.25.1...v7.25.3)

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Bumps [@hypothesis/frontend-shared](https://github.com/hypothesis/frontend-shared) from 3.9.0 to 3.10.0.
- [Release notes](https://github.com/hypothesis/frontend-shared/releases)
- [Changelog](https://github.com/hypothesis/frontend-shared/blob/main/CHANGELOG.md)
- [Commits](https://github.com/hypothesis/frontend-shared/compare/v3.9.0...v3.10.0)

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Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.3.1 to 2.3.2.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/2.3.1...2.3.2)

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Bumps [terser](https://github.com/terser/terser) from 5.7.2 to 5.8.0.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v5.7.2...v5.8.0)

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Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.987.0 to 2.991.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Changelog](https://github.com/aws/aws-sdk-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-js/compare/v2.987.0...v2.991.0)

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Bumps [sass](https://github.com/sass/dart-sass) from 1.39.2 to 1.41.1.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sass/dart-sass/compare/1.39.2...1.41.1)

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