chore(eslint): Bump eslint-loader version to support ESLint 6 (vuejs#5273)

Author: megos

packages/@vue/cli-plugin-eslint/package.json

@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "@vue/cli-shared-utils": "^4.2.3",
-    "eslint-loader": "^2.1.2",
+    "eslint-loader": "^2.2.1",
     "globby": "^9.2.0",
     "inquirer": "^6.3.1",
     "webpack": "^4.0.0",

yarn.lock

@@ -7324,7 +7324,7 @@ eslint-import-resolver-webpack@^0.11.1:
     resolve "^1.10.0"
     semver "^5.3.0"
 
-eslint-loader@^2.1.2:
+eslint-loader@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/eslint-loader/-/eslint-loader-2.2.1.tgz#28b9c12da54057af0845e2a6112701a2f6bf8337"
   integrity sha512-RLgV9hoCVsMLvOxCuNjdqOrUqIj9oJg8hF44vzJaYqsAHuY9G2YAeN3joQ9nxP0p5Th9iFSIpKo+SD8KISxXRg==