chore(deps): update dependency eslint to v6.6.0

Author: renovate-bot

package.json

@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "babel-eslint": "10.0.3",
-    "eslint": "6.5.1",
+    "eslint": "6.6.0",
     "eslint-friendly-formatter": "4.0.1",
     "eslint-loader": "3.0.2",
     "eslint-plugin-vue": "5.2.3"