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

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

src/xdist/looponfail.py

@@ -6,6 +6,7 @@
     processes) otherwise changes to source code can crash
     the controlling process which should best never happen.
 """
+
 import os
 from pathlib import Path
 from typing import Dict, Sequence

src/xdist/newhooks.py

@@ -11,6 +11,7 @@
 
     http://pytest.org/en/latest/writing_plugins.html#optionally-using-hooks-from-3rd-party-plugins
 """
+
 import pytest