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

Author: renovate[bot]

package.json

@@ -31,7 +31,7 @@
     "@babel/preset-env": "^7.5.5",
     "@commitlint/cli": "^8.1.0",
     "@commitlint/config-conventional": "^8.1.0",
-    "@nuxtjs/eslint-config": "^1.1.2",
+    "@nuxtjs/eslint-config": "^12.0.0",
     "babel-eslint": "^10.0.3",
     "babel-jest": "^24.9.0",
     "codecov": "^3.5.0",