Bump homebridge from 1.7.0 to 1.8.4

Bumps [homebridge](https://github.com/homebridge/homebridge) from 1.7.0 to 1.8.4.
- [Release notes](https://github.com/homebridge/homebridge/releases)
- [Changelog](https://github.com/homebridge/homebridge/blob/latest/CHANGELOG.md)
- [Commits](homebridge/homebridge@v1.7.0...v1.8.4)

---
updated-dependencies:
- dependency-name: homebridge
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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