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

backend/open_webui/models/knowledge.py

@@ -1,34 +1,36 @@
 import json
 import logging
 import time
-from typing import Optional
 import uuid
+from typing import Optional
 
-from sqlalchemy import select, delete, update, or_, func, cast
-from sqlalchemy.ext.asyncio import AsyncSession
 from open_webui.internal.db import Base, JSONField, get_async_db_context
-
+from open_webui.models.access_grants import AccessGrantModel, AccessGrants
 from open_webui.models.files import (
     File,
-    FileModel,
     FileMetadataResponse,
+    FileModel,
     FileModelResponse,
 )
 from open_webui.models.groups import Groups
-from open_webui.models.users import User, UserModel, Users, UserResponse
-from open_webui.models.access_grants import AccessGrantModel, AccessGrants
-
-
+from open_webui.models.users import User, UserModel, UserResponse, Users
 from pydantic import BaseModel, ConfigDict, Field
 from sqlalchemy import (
+    JSON,
     BigInteger,
     Column,
     ForeignKey,
     String,
     Text,
-    JSON,
     UniqueConstraint,
+    cast,
+    delete,
+    func,
+    or_,
+    select,
+    update,
 )
+from sqlalchemy.ext.asyncio import AsyncSession
 
 log = logging.getLogger(__name__)