chore(deps): update dependency stylelint-config-standard-scss to v15

Author: renovate[bot]

frontends/package.json

@@ -69,7 +69,7 @@
     "prettier": "^3.3.3",
     "prettier-plugin-django-alpine": "^1.2.6",
     "stylelint": "^16.0.0",
-    "stylelint-config-standard-scss": "^14.0.0",
+    "stylelint-config-standard-scss": "^15.0.0",
     "ts-node": "^10.9.2",
     "type-fest": "^4.18.3",
     "typescript": "^5.4.3"