whitespace cleanup

Author: douglowe

tests/test_validation_tasks.py

@@ -318,4 +318,4 @@ def test_return_validation_raises_error(mock_get_status):
         return_ro_crate_validation("crate789")
 
     assert "MinIO S3 Error" in str(exc_info.value.message)
-    mock_get_status.assert_called_once_with("crate789")
+    mock_get_status.assert_called_once_with("crate789")