refactor: consolidate linting tools into Ruff

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

tests/test_api_settings.py

@@ -1,6 +1,6 @@
 """Tests for app/api/settings.py module."""
 
-from unittest.mock import MagicMock, patch
+from unittest.mock import MagicMock
 
 import pytest
 from fastapi import HTTPException