chore: bump minimum supported Python version to 3.11 (#10386)

api/services/external_knowledge_service.py

@@ -1,6 +1,6 @@
 import json
 from copy import deepcopy
-from datetime import datetime, timezone
+from datetime import UTC, datetime
 from typing import Any, Optional, Union
 
 import httpx
@@ -99,7 +99,7 @@ class ExternalDatasetService:
         external_knowledge_api.description = args.get("description", "")
         external_knowledge_api.settings = json.dumps(args.get("settings"), ensure_ascii=False)
         external_knowledge_api.updated_by = user_id
-        external_knowledge_api.updated_at = datetime.now(timezone.utc).replace(tzinfo=None)
+        external_knowledge_api.updated_at = datetime.now(UTC).replace(tzinfo=None)
         db.session.commit()
 
         return external_knowledge_api