FirebaseUI for Android v8.0.2

FirebaseUI for Android v8.0.2 is a patch release containing bugfixes.

Changes:

• [Firestore] Fix page keys comparison (#2046)
• [Auth] Log an exception if the device has no browser installed (#2055)
• [Auth] Update play-services-auth to 20.3.0 (#2063)
• [Internal] Upgrade to AGP 7.2.2 and Kotlin 1.7.10 (#2054)