chore(video_player): update video_player_platform_interface to ^7.0.0

- Bumped dependency version from ^6.6.0 to ^7.0.0 in both main package and example
- Removed temporary dependency_overrides used for testing

Author: nateshmbhat

packages/video_player/video_player_avfoundation/example/pubspec.yaml

@@ -16,7 +16,7 @@ dependencies:
     # The example app is bundled with the plugin so we use a path dependency on
     # the parent directory to use the current plugin's version.
     path: ../
-  video_player_platform_interface: ^6.6.0
+  video_player_platform_interface: ^7.0.0
 
 dev_dependencies:
   flutter_test:
@@ -31,7 +31,3 @@ flutter:
   assets:
     - assets/flutter-mark-square-64.png
     - assets/Butterfly-209.mp4
-# FOR TESTING AND INITIAL REVIEW ONLY. DO NOT MERGE.
-# See https://github.com/flutter/flutter/blob/master/docs/ecosystem/contributing/README.md#changing-federated-plugins
-dependency_overrides:
-  video_player_platform_interface: {path: ../../../../packages/video_player/video_player_platform_interface}

packages/video_player/video_player_avfoundation/pubspec.yaml

@@ -24,7 +24,7 @@ flutter:
 dependencies:
   flutter:
     sdk: flutter
-  video_player_platform_interface: ^6.6.0
+  video_player_platform_interface: ^7.0.0
 
 dev_dependencies:
   build_runner: ^2.3.3
@@ -36,8 +36,3 @@ dev_dependencies:
 topics:
   - video
   - video-player
-# FOR TESTING AND INITIAL REVIEW ONLY. DO NOT MERGE.
-# See https://github.com/flutter/flutter/blob/master/docs/ecosystem/contributing/README.md#changing-federated-plugins
-dependency_overrides:
-  video_player_platform_interface:
-    { path: ../../../packages/video_player/video_player_platform_interface }