fix the typing.Literal bug for eventsub

Author: IAmTomahawkx

docs/changelog.rst

@@ -22,6 +22,9 @@ New logo!
     - Added :func:`ext.pubsub.Websocket.pubsub_error` to support being notified of pubsub errors
     - Added :func:`ext.pubsub.Websocket.pubsub_nonce` to support being notified of pubsub nonces
 
+- ext.eventsub
+    - Patch 2.1.1 bug which breaks library on 3.7 for ext.eventsub
+
 2.1.1
 ======
 - Twitchio

twitchio/ext/eventsub/models.py

@@ -3,7 +3,8 @@
 import hmac
 import hashlib
 import logging
-from typing import Dict, TYPE_CHECKING, Optional, Type, Union, Literal
+from typing import Dict, TYPE_CHECKING, Optional, Type, Union
+from typing_extensions import Literal
 
 from aiohttp import web