Update typing syntax (#49480)

* Update typing syntax

* Replace typing imports with ones from collections where possible

* Changes after review

homeassistant/components/guardian/util.py

@@ -1,7 +1,10 @@
 """Define Guardian-specific utilities."""
+from __future__ import annotations
+
 import asyncio
+from collections.abc import Awaitable
 from datetime import timedelta
-from typing import Awaitable, Callable
+from typing import Callable
 
 from aioguardian import Client
 from aioguardian.errors import GuardianError