Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: amankoli09

backend/src/services/audit_log.py

@@ -1,5 +1,5 @@
 from typing import Optional, List, Dict, Any
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from datetime import datetime, timezone
 import hashlib
 import json