Chore: upgrade dependencies

Author: mysticatea

package.json

@@ -20,7 +20,7 @@
     "css-loader": "^0.28.7",
     "eslint": "^4.12.1",
     "eslint-config-mysticatea": "^12.0.0",
-    "eslint-plugin-vue": "^4.0.0-beta.0",
+    "eslint-plugin-vue": "^4.0.0-beta.2",
     "file-loader": "^1.1.5",
     "lodash": "^4.17.4",
     "material-design-icons": "^3.0.1",