Add backwards compatibility for override typing

Author: maxachis

pdap_access_manager/access_manager/async_.py

@@ -1,6 +1,7 @@
 from contextlib import asynccontextmanager
 from http import HTTPStatus
-from typing import Any, AsyncGenerator, override
+from typing import Any, AsyncGenerator
+from typing_extensions import override
 
 from aiohttp import ClientSession, ClientResponseError
 

pdap_access_manager/access_manager/sync.py

@@ -1,6 +1,7 @@
 from contextlib import contextmanager
 from http import HTTPStatus
-from typing import Generator, Any, override
+from typing import Generator, Any
+from typing_extensions import override
 
 from requests import Session, HTTPError