chore(repo): add lints, update freezed, json_serializable

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat_flutter/lib/src/message_text.dart

@@ -14,12 +14,12 @@ typedef MessageText = StreamMessageText;
 class StreamMessageText extends StatelessWidget {
   /// Constructor for creating a [StreamMessageText] widget
   const StreamMessageText({
-    Key? key,
+    super.key,
     required this.message,
     required this.messageTheme,
     this.onMentionTap,
     this.onLinkTap,
-  }) : super(key: key);
+  });
 
   /// Message whose text is to be displayed
   final Message message;