Sort imports according to PEP8 for 'tests' (#29791)

tests/helpers/test_check_config.py

@@ -2,11 +2,12 @@
 import logging
 from unittest.mock import patch
 
-from homeassistant.helpers.check_config import (
-    async_check_ha_config_file,
-    CheckConfigError,
-)
 from homeassistant.config import YAML_CONFIG_FILE
+from homeassistant.helpers.check_config import (
+    CheckConfigError,
+    async_check_ha_config_file,
+)
+
 from tests.common import patch_yaml_files
 
 _LOGGER = logging.getLogger(__name__)