build(deps): bump debug, @wdio/mocha-framework and browser-sync

Bumps [debug](https://github.com/debug-js/debug) to 4.3.4 and updates ancestor dependencies [debug](https://github.com/debug-js/debug), [@wdio/mocha-framework](https://github.com/webdriverio/webdriverio/tree/HEAD/packages/wdio-mocha-framework) and [browser-sync](https://github.com/BrowserSync/browser-sync). These dependencies need to be updated together.


Updates `debug` from 2.2.0 to 4.3.4
- [Release notes](https://github.com/debug-js/debug/releases)
- [Commits](debug-js/debug@2.2.0...4.3.4)

Updates `@wdio/mocha-framework` from 5.18.6 to 8.20.0
- [Release notes](https://github.com/webdriverio/webdriverio/releases)
- [Changelog](https://github.com/webdriverio/webdriverio/blob/main/CHANGELOG.md)
- [Commits](https://github.com/webdriverio/webdriverio/commits/v8.20.0/packages/wdio-mocha-framework)

Updates `browser-sync` from 2.26.7 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@v2.26.7...v2.29.3)

---
updated-dependencies:
- dependency-name: debug
  dependency-type: indirect
- dependency-name: "@wdio/mocha-framework"
  dependency-type: direct:development
- dependency-name: browser-sync
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>