bump vue-style-loader version

Author: yyx990803

package.json

@@ -53,7 +53,7 @@
     "resolve": "^1.4.0",
     "source-map": "^0.6.1",
     "vue-hot-reload-api": "^2.2.0",
-    "vue-style-loader": "^3.1.1",
+    "vue-style-loader": "^4.0.1",
     "vue-template-es2015-compiler": "^1.6.0"
   },
   "peerDependencies": {