Update node versions

Author: Tonkpils

frontend/package-lock.json

@@ -78,7 +78,7 @@
   },
   "engines": {
     "bower": "1.x",
-    "node": "6.* || 8.* || >= 10.*",
+    "node": "14.* || 16.* || >= 18.*",
     "npm": "7.x"
   },
   "ember-addon": {