Bump browser-sync from 2.27.7 to 2.27.9 (#841)

Bumps [browser-sync](https://github.com/BrowserSync/browser-sync) from 2.27.7 to 2.27.9.
- [Release notes](https://github.com/BrowserSync/browser-sync/releases)
- [Changelog](https://github.com/BrowserSync/browser-sync/blob/master/CHANGELOG.md)
- [Commits](BrowserSync/browser-sync@v2.27.7...v2.27.9)

---
updated-dependencies:
- dependency-name: browser-sync
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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