Sort imports according to PEP8 for 'homeassistant' folder (#29789)

Components are already done

homeassistant/util/json.py

@@ -1,10 +1,9 @@
 """JSON utility functions."""
-import logging
-from typing import Union, List, Dict, Optional, Type
-
 import json
+import logging
 import os
 import tempfile
+from typing import Dict, List, Optional, Type, Union
 
 from homeassistant.exceptions import HomeAssistantError