Revert "chore(deps): bump connectivity_plus (#1885)" (#1890)

This reverts commit e16baf7.

Author: esarbanis

packages/stream_chat_flutter_core/pubspec.yaml

@@ -11,7 +11,7 @@ environment:
 
 dependencies:
   collection: ^1.17.2
-  connectivity_plus: ">=4.0.2 <7.0.0"
+  connectivity_plus: ">=4.0.2 <6.0.0"
   flutter:
     sdk: flutter
   freezed_annotation: ^2.4.1