Hello doit2020,
If your system has Internet access simply just use these instructions:
apt update && apt -y install ca-certificates wget net-tools gnupg
wget -qO - https://as-repository.openvpn.net/as-repo-public.gpg | apt-key add -
echo "deb http://as-repository.openvpn.net/as/debian bullseye main">/etc/apt/sources.list.d/openvpn-as-repo.list
apt update && apt -y install openvpn-as
The instructions you pasted are for the alternative installation method for when your system does not have Internet access. And if you really have a system that has no Internet access and requires the alternative installation instructions whereby you have to download and install each dependency separate, then you have to install each and every dependency you need yourself instead of letting apt take care of it for you.
I believe that if you use the correct installation instructions I just gave you it will work fine and the dependency issue will resolve itself.
Kind regards,
Johan