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

backend/open_webui/routers/analytics.py

@@ -1,17 +1,17 @@
-from typing import Optional
-from datetime import datetime, timedelta
-from collections import defaultdict
 import logging
-from fastapi import APIRouter, Depends, Query
-from pydantic import BaseModel
+from collections import defaultdict
+from datetime import datetime, timedelta
+from typing import Optional
 
-from open_webui.models.chat_messages import ChatMessages, ChatMessageModel
+from fastapi import APIRouter, Depends, Query
+from open_webui.internal.db import get_async_session
+from open_webui.models.chat_messages import ChatMessageModel, ChatMessages
 from open_webui.models.chats import Chats
+from open_webui.models.feedbacks import Feedbacks
 from open_webui.models.groups import Groups
 from open_webui.models.users import Users
-from open_webui.models.feedbacks import Feedbacks
 from open_webui.utils.auth import get_admin_user
-from open_webui.internal.db import get_async_session
+from pydantic import BaseModel
 from sqlalchemy.ext.asyncio import AsyncSession
 
 log = logging.getLogger(__name__)