Remove support for python <3.11 (#1273)

Python 3.11 ships with latest Debian Bookworm. 
pypy is not that widely used with this library based on statistics. It could be added back when pypy supports python 3.11.

kasa/protocols/iotprotocol.py

@@ -4,8 +4,9 @@ from __future__ import annotations
 
 import asyncio
 import logging
+from collections.abc import Callable
 from pprint import pformat as pf
-from typing import TYPE_CHECKING, Any, Callable
+from typing import TYPE_CHECKING, Any
 
 from ..deviceconfig import DeviceConfig
 from ..exceptions import (