[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

pandas/tests/libs/test_lib.py

@@ -303,10 +303,9 @@ def test_ensure_string_array_list_of_lists():
     # GH#61155: ensure list of lists doesn't get converted to string
     arr = [list("test"), list("word")]
     result = lib.ensure_string_array(arr)
-    
+
     # Each item in result should still be a list, not a stringified version
     assert isinstance(result, np.ndarray)
     assert result.dtype == object
     assert result[0] == "['t', 'e', 's', 't']"
     assert result[1] == "['w', 'o', 'r', 'd']"
-