fix a failing unit test (#2562)

* fix a failing unit test

* chore: Update Goldens

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Co-authored-by: renefloor <15101411+renefloor@users.noreply.github.com>

Author: renefloor

packages/stream_chat_flutter/test/src/channel/channel_image_test.dart

@@ -1,4 +1,4 @@
-import 'package:cached_network_image/cached_network_image.dart';
+import 'package:cached_network_image_ce/cached_network_image.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mocktail/mocktail.dart';