style: Fix black formatting

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: dimitri-yatsenko

tests/conftest.py

@@ -8,6 +8,7 @@
 import certifi
 import networkx as nx
 import pytest
+
 minio = pytest.importorskip("minio")
 import urllib3
 from packaging import version

tests/test_cascading_delete.py

@@ -36,6 +36,7 @@ def test_stepwise_delete(schema_simp_pop):
         not B()
     ), "failed to delete from the parent table following child table deletion"
 
+
 def test_part_delete_forwards_kwargs(schema_simp_pop):
     assert not dj.config["safemode"], "safemode must be off for testing"
     assert L() and A() and B() and B.C(), "schema population failed"
@@ -45,6 +46,7 @@ def test_part_delete_forwards_kwargs(schema_simp_pop):
 
     assert not B.C(), "failed to delete child table with forwarded kwargs"
 
+
 def test_delete_tree_restricted(schema_simp_pop):
     assert not dj.config["safemode"], "safemode must be off for testing"
     assert (