Bumps `room` from 2.6.1 to 2.8.4.

Updates `androidx.room:room-runtime` from 2.6.1 to 2.8.4

Updates `androidx.room:room-compiler` from 2.6.1 to 2.8.4

Updates `androidx.room:room-rxjava3` from 2.6.1 to 2.8.4

Updates `androidx.room` from 2.6.1 to 2.8.4

---
updated-dependencies:
- dependency-name: androidx.room:room-runtime
  dependency-version: 2.8.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.room:room-compiler
  dependency-version: 2.8.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.room:room-rxjava3
  dependency-version: 2.8.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.room
  dependency-version: 2.8.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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