chore(example): update pub.dev version of flutter_quill packages

Author: EchoEllet

example/pubspec.yaml

@@ -13,10 +13,10 @@ dependencies:
   cupertino_icons: ^1.0.6
 
   # Flutter Quill Packages
-  flutter_quill: ^10.0.0
-  dart_quill_delta: ^10.0.0
-  flutter_quill_extensions: ^10.0.0
-  flutter_quill_test: ^10.0.0
+  flutter_quill: ^10.7.3
+  dart_quill_delta: ^10.7.3
+  flutter_quill_extensions: ^10.7.3
+  flutter_quill_test: ^10.7.3
   # Dart Packages
   path: ^1.8.3
   equatable: ^2.0.5