Update update-notifier to the latest version 🚀 (#72)

Update update-notifier to the latest version 🚀

Author: t1st3

package.json

@@ -30,7 +30,7 @@
   },
   "dependencies": {
     "figlet": "^1.2.3",
-    "update-notifier": "^3.0.0",
+    "update-notifier": "^4.0.0",
     "yeoman-generator": "^4.0.1"
   },
   "devDependencies": {