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

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

Author: pre-commit-ci[bot]

src/attrs/sphinx_cached_property.py

@@ -6,6 +6,7 @@
 classes will be inaccessible.
 
 """
+
 from functools import cached_property
 from typing import Any