chore(package): update eslint to version 6.5.0

Closes #14

Author: greenkeeper[bot]

package.json

@@ -14,7 +14,7 @@
   "main": "generators/app/index.js",
   "keywords": ["react", "redux", "yeoman-generator"],
   "devDependencies": {
-    "eslint": "^4.1.0",
+    "eslint": "^6.5.0",
     "eslint-config-prettier": "^2.4.0",
     "eslint-config-xo": "^0.19.0",
     "eslint-plugin-prettier": "^2.2.0",