refac: modernize type annotations (PEP 604 / PEP 585)

backend/open_webui/models/oauth_sessions.py

@@ -1,20 +1,17 @@
-import time
-import logging
-import uuid
-from typing import Optional, List
 import base64
 import hashlib
 import json
+import logging
+import time
+import uuid
+from typing import List, Optional
 
 from cryptography.fernet import Fernet
-
-from sqlalchemy import select, delete, update
-from sqlalchemy.ext.asyncio import AsyncSession
-from open_webui.internal.db import Base, get_async_db_context
 from open_webui.env import OAUTH_SESSION_TOKEN_ENCRYPTION_KEY
-
+from open_webui.internal.db import Base, get_async_db_context
 from pydantic import BaseModel, ConfigDict
-from sqlalchemy import BigInteger, Column, String, Text, Index
+from sqlalchemy import BigInteger, Column, Index, String, Text, delete, select, update
+from sqlalchemy.ext.asyncio import AsyncSession
 
 log = logging.getLogger(__name__)