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

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

tests/conftest.py

@@ -3,6 +3,7 @@
 Individual test modules MUST NOT import fixtures from `tests.fixtures`,
 as this can have strange side effects.
 """
+
 pytest_plugins = [
     "tests.fixtures",
 ]