fix babel-runtime version

Author: yyx990803

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-loader",
-  "version": "8.3.0",
+  "version": "8.3.1",
   "description": "Vue.js component loader for Webpack",
   "main": "index.js",
   "repository": {
@@ -46,7 +46,7 @@
     "babel-loader": "^6.2.4",
     "babel-core": "^6.8.0",
     "babel-plugin-transform-runtime": "^6.8.0",
-    "babel-runtime": "^6.8.0",
+    "babel-runtime": "^6.0.0",
     "babel-preset-es2015": "^6.6.0",
     "css-loader": "*",
     "vue-html-loader": "^1.0.0",