ddns-scripts: update to the latest version
with the recent LuCI update in Services → Dynamic DNS it says:
The currently installed ‘ddns-scripts’ package did not support all available settings.
and from feedback from our users, which they gave us on forum it's probably broken.
Anyway, they find the workaround to install package directly from OpenWRT, but if somebody use no-ip,cloudflare, etc we would need to update also: