docs(auth): bump apple signin dependency versions to null-safe (#6980)
docs(auth): bump apple signin dependency versions to null-safe (#6980)


firebase/flutterfire,firebase/flutterfire,firebase/flutterfire,firebase/flutterfire,firebase/flutterfire,firebase/flutterfire,firebase/flutterfire,firebase/flutterfire,firebase/flutterfire,firebase/flutterfire