build(deps): bump qs and browser-sync (#216)

Removes [qs](https://github.com/ljharb/qs). It's no longer used after updating ancestor dependency [browser-sync](https://github.com/BrowserSync/browser-sync). These dependencies need to be updated together.


Removes `qs`

Updates `browser-sync` from 2.27.10 to 2.29.3
- [Release notes](https://github.com/BrowserSync/browser-sync/releases)
- [Changelog](https://github.com/BrowserSync/browser-sync/blob/master/CHANGELOG.md)
- [Commits](BrowserSync/browser-sync@v2.27.10...v2.29.3)

---
updated-dependencies:
- dependency-name: qs
  dependency-type: indirect
- dependency-name: browser-sync
  dependency-type: indirect
...

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