Fix code scanning alert no. 14: Reflected server-side cross-site scri…

…pting

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

End_to_end_Solutions/AOAISearchDemo/app/data/app.py

@@ -373,7 +373,7 @@ def get_access_rule(rule_id: str):
     try:
         access_rule = permissions_manager.get_access_rule(rule_id)
         if access_rule is None:
-            return Response(response=f"Access rule with rule_id {rule_id} not found.", status=404)
+            return Response(response=f"Access rule with rule_id {html.escape(rule_id)} not found.", status=404)
         else:
             return Response(response=json.dumps(access_rule.to_item()), status=200)
     except Exception as e: