refactor: updated dependency update-notifier

Author: mfranzke

packages/core/package.json

@@ -18,7 +18,7 @@
     "markdown-it": "6.0.1",
     "node-fetch": "2.6.1",
     "recursive-copy": "2.0.8",
-    "update-notifier": "2.2.0"
+    "update-notifier": "5.1.0"
   },
   "devDependencies": {
     "@babel/core": "^7.5.5",