fix: lint

Author: totalimmersion

stream_chat/async_chat/channel.py

@@ -246,4 +246,4 @@ async def update_member_partial(
             raise StreamChannelException("user_id must not be empty")
 
         payload = {"set": to_set or {}, "unset": to_unset or []}
-        return self.client.patch(f"{self.url}/member/{user_id}", data=payload)
+        return self.client.patch(f"{self.url}/member/{user_id}", data=payload)