chore: auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

extensions/eda/plugins/event_source/oauth_tokens.py

@@ -25,7 +25,7 @@
 import time
 import uuid
 from abc import abstractmethod
-from typing import Any, Dict, Optional, Tuple, Union
+from typing import Any, Dict, Optional, Tuple
 
 import aiohttp
 import cryptography