[firebase_auth] Update a broken dependency. (#1117)

This was depending on a version of `firebase_core` that was using the
original Android Support libraries instead of AndroidX.

Author: Michael Klimushyn

packages/firebase_auth/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.8.0+1
+
+* Update a broken dependency.
+
 ## 0.8.0
 
 * **Breaking change**. Migrate from the deprecated original Android Support

packages/firebase_auth/example/pubspec.yaml

@@ -8,7 +8,7 @@ dependencies:
   firebase_auth:
     path: ../
   google_sign_in: ^3.0.4
-  firebase_core: ^0.2.5+1
+  firebase_core: ^0.3.0
 
 flutter:
   uses-material-design: true

packages/firebase_auth/pubspec.yaml

@@ -4,7 +4,7 @@ description: Flutter plugin for Firebase Auth, enabling Android and iOS
   like Google, Facebook and Twitter.
 author: Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/flutter/plugins/tree/master/packages/firebase_auth
-version: 0.8.0
+version: "0.8.0+1"
 
 flutter:
   plugin:
@@ -14,7 +14,7 @@ flutter:
 
 dependencies:
   meta: ^1.0.4
-  firebase_core: ^0.2.5+1
+  firebase_core: ^0.3.0
 
   flutter:
     sdk: flutter