Bumps [@hypothesis/frontend-shared](https://github.com/hypothesis/frontend-shared) from 2.0.0 to 2.1.0.
- [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/v2.0.0...v2.1.0)
Signed-off-by: dependabot[bot] <support@github.com>