Fix: Added missing Optional import in taxis API to resolve Render deploy failure

backend/app/api/taxis/__init__.py

@@ -3,7 +3,7 @@ from sqlmodel import Session, select
 import os
 import shutil
 from uuid import uuid4, UUID
-from typing import List
+from typing import List, Optional
 from app.core.database import get_session
 from app.models.taxi import Taxi
 from app.api.deps import get_current_admin