Ubuntu 20.04 support for kernel-version.sh?

Hi. Trying to us the kernel-version.sh script on 20.04. I modified the script to add Ubuntu 20 major version but it seems that the API this talks to doesn't support 20.04.

Is the maintainer of the API hanging-out here? Could you update the API? Otherwise I'm going to have to use my brain or something and that would be awful.