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

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

tests/test_vox.py

@@ -1,4 +1,5 @@
 """Vox tests"""
+
 import io
 import os
 import pathlib

xontrib/autovox.py

@@ -8,6 +8,7 @@
 
 Developers should look at XSH.builtins.events.autovox_policy
 """
+
 import itertools
 import warnings
 from pathlib import Path

xontrib/vox.py

@@ -1,4 +1,5 @@
 """Python virtual environment manager for xonsh."""
+
 import os.path
 import subprocess
 import tempfile

xontrib/voxapi.py

@@ -8,6 +8,7 @@
 * ``vox_on_deactivate(env: str, path: pathlib.Path) -> None``
 * ``vox_on_delete(env: str) -> None``
 """
+
 import collections.abc
 import logging
 import os