Bump firebaseUiVersion from 6.1.0 to 6.2.0
Bump firebaseUiVersion from 6.1.0 to 6.2.0

Bumps `firebaseUiVersion` from 6.1.0 to 6.2.0.

Updates `firebase-ui` from 6.1.0 to 6.2.0
- [Release notes](https://github.com/firebase/FirebaseUI-Android/releases)
- [Commits](https://github.com/firebase/FirebaseUI-Android/compare/6.1.0...6.2.0)

Updates `firebase-ui-storage` from 6.1.0 to 6.2.0
- [Release notes](https://github.com/firebase/FirebaseUI-Android/releases)
- [Commits](https://github.com/firebase/FirebaseUI-Android/compare/6.1.0...6.2.0)

Updates `firebase-ui-database` from 6.1.0 to 6.2.0
- [Release notes](https://github.com/firebase/FirebaseUI-Android/releases)
- [Commits](https://github.com/firebase/FirebaseUI-Android/compare/6.1.0...6.2.0)

Updates `firebase-ui-auth` from 6.1.0 to 6.2.0
- [Release notes](https://github.com/firebase/FirebaseUI-Android/releases)
- [Commits](https://github.com/firebase/FirebaseUI-Android/compare/6.1.0...6.2.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
fobo66/BookcrossingMobile,fobo66/BookcrossingMobile