fix(build): add missing memory-fs package

Author: Franck Freiburger

package.json

@@ -108,6 +108,7 @@
     "vue2": "npm:vue@^2.7.16",
     "webpack": "^5.67.0",
     "webpack-bundle-analyzer": "^4.5.0",
-    "webpack-cli": "^5.1.4"
+    "webpack-cli": "^5.1.4",
+    "memory-fs": "^0.5.0"
   }
 }