remove List imports

backend/apps/rag/search/serpstack.py

@@ -1,6 +1,6 @@
 import json
 import logging
-from typing import List, Optional
+from typing import Optional
 import requests
 
 from apps.rag.search.main import SearchResult, get_filtered_results
@@ -14,7 +14,7 @@ def search_serpstack(
     api_key: str,
     query: str,
     count: int,
-    filter_list: Optional[List[str]] = None,
+    filter_list: Optional[list[str]] = None,
     https_enabled: bool = True,
 ) -> list[SearchResult]:
     """Search using serpstack.com's and return the results as a list of SearchResult objects.