🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

google/cloud/pubsub_v1/publisher/_batch/thread.py

@@ -286,7 +286,7 @@ def _commit(self) -> None:
             if self._batch_done_callback is not None:
                 # Failed to publish batch.
                 self._batch_done_callback(batch_transport_succeeded)
-                
+
             for future in self._futures:
                 future.set_exception(exc)