fix: update stream_chat/tests/test_channel.py

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: totalimmersion

stream_chat/tests/test_channel.py

@@ -382,7 +382,6 @@ def test_pin_channel(
         self, client: StreamChat, channel: Channel, random_users: List[Dict]
     ):
         user_id = random_users[0]["id"]
-        
         # Pin the channel
         response = channel.pin(user_id)
         assert response is not None