Update dependency sass-loader to v13

Author: renovate[bot]

frontend/package.json

@@ -22,6 +22,6 @@
     "@vue/cli-service": "5.0.1",
     "@vue/compiler-sfc": "3.1.1",
     "sass": "1.34.1",
-    "sass-loader": "8.0.2"
+    "sass-loader": "13.0.2"
   }
 }