fix(smoke): fix lint failure (#12419)

Author: hsheth2

smoke-test/tests/structured_properties/test_structured_properties.py

@@ -7,6 +7,7 @@
 
 import pydantic
 import pytest
+
 from datahub.api.entities.dataset.dataset import Dataset
 from datahub.api.entities.structuredproperties.structuredproperties import (
     StructuredProperties,