chore(deps): update dependency eslint-plugin-vue to v9

Author: renovate-bot

package.json

@@ -30,7 +30,7 @@
     "@vue/cli-service": "~4.5.17",
     "babel-eslint": "^10.1.0",
     "eslint": "^6.7.2",
-    "eslint-plugin-vue": "^6.2.2",
+    "eslint-plugin-vue": "9.1.0",
     "vue-template-compiler": "^2.6.11"
   },
   "eslintConfig": {