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

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

Author: pre-commit-ci[bot]

jupyter_core/tests/test_paths.py

@@ -59,6 +59,7 @@
 prefer_env = patch.dict("os.environ", {"JUPYTER_PREFER_ENV_PATH": "True"})
 prefer_user = patch.dict("os.environ", {"JUPYTER_PREFER_ENV_PATH": "False"})
 
+
 def setup_function():
     environment.start()
     for var in [