Update pubspec.yaml of flutter_quill_extensions

Author: Ellet

flutter_quill_extensions/pubspec.yaml

@@ -40,7 +40,7 @@ dependencies:
 
   # Plugins
   video_player: ^2.8.1
-  youtube_player_flutter: ^8.1.2
+  youtube_player_flutter: ^9.0.0-beta.0
   url_launcher: ^6.2.1
   super_clipboard: ^0.8.1
   gal: ^2.1.3