Bumps [puppeteer](https://github.com/puppeteer/puppeteer) from 2.1.0 to 2.1.1.
- [Release notes](https://github.com/puppeteer/puppeteer/releases)
- [Commits](https://github.com/puppeteer/puppeteer/compare/v2.1.0...v2.1.1)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>