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

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

packages/stream_chat/pubspec.yaml

@@ -13,10 +13,10 @@ dependencies:
   collection: ^1.15.0
   dio: ^4.0.0
   equatable: ^2.0.0
-  freezed_annotation: ^1.0.0
+  freezed_annotation: ^2.0.3
   http_parser: ^4.0.0
   jose: ^0.3.2
-  json_annotation: ^4.3.0
+  json_annotation: ^4.5.0
   logging: ^1.0.1
   meta: ^1.3.0
   mime: ^1.0.0
@@ -28,7 +28,7 @@ dependencies:
 dev_dependencies:
   build_runner: ^2.0.1
   dart_code_metrics: ^4.4.0
-  freezed: ^1.0.0
-  json_serializable: ^6.0.1
+  freezed: ^2.0.3
+  json_serializable: ^6.2.0
   mocktail: ^0.3.0
   test: ^1.17.12