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

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

packages/stream_chat_flutter/lib/src/stream_svg_icon.dart

@@ -5,12 +5,12 @@ import 'package:flutter_svg/flutter_svg.dart';
 class StreamSvgIcon extends StatelessWidget {
   /// Constructor for creating a [StreamSvgIcon]
   const StreamSvgIcon({
-    Key? key,
+    super.key,
     this.assetName,
     this.color,
     this.width = 24,
     this.height = 24,
-  }) : super(key: key);
+  });
 
   /// [StreamSvgIcon] type
   factory StreamSvgIcon.settings({