style: fix lint

Author: larkee

tests/system/test_system.py

@@ -724,7 +724,9 @@ def test_backup_workflow(self):
         self.to_drop.append(database)
         operation = database.restore(source=backup)
         restored_db = operation.result()
-        self.assertEqual(self.database_version_time, restored_db.restore_info.backup_info.create_time)
+        self.assertEqual(
+            self.database_version_time, restored_db.restore_info.backup_info.create_time
+        )
 
         metadata = operation.metadata
         self.assertEqual(self.database_version_time, metadata.backup_info.create_time)