chore(deps): update devdependency @nuxtjs/eslint-config to v12

Author: renovate[bot]

package.json

@@ -28,7 +28,7 @@
   "devDependencies": {
     "@babel/core": "^7.7.5",
     "@babel/preset-env": "^7.7.6",
-    "@nuxtjs/eslint-config": "^2.0.0",
+    "@nuxtjs/eslint-config": "^12.0.0",
     "ajv-cli": "^3.0.0",
     "babel-eslint": "^10.0.3",
     "babel-jest": "^24.9.0",