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

backend/open_webui/models/notes.py

@@ -1,19 +1,16 @@
 import json
 import time
 import uuid
-from typing import Optional
 from functools import lru_cache
+from typing import Optional
 
-from sqlalchemy import Boolean, select, delete, update, or_, func, cast
-from sqlalchemy.ext.asyncio import AsyncSession
 from open_webui.internal.db import Base, get_async_db_context
-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.groups import Groups
+from open_webui.models.users import User, UserModel, UserResponse, Users
 from pydantic import BaseModel, ConfigDict, Field
-from sqlalchemy import BigInteger, Column, Text, JSON, ForeignKey
+from sqlalchemy import JSON, BigInteger, Boolean, Column, ForeignKey, Text, cast, delete, func, or_, select, update
+from sqlalchemy.ext.asyncio import AsyncSession
 
 ####################
 # Note DB Schema