sudo package missing as dependency

[Foxi352]

I tried to install in a new Debian 12 LXC container in Proxmox. The sudo package is not installed per default on minimal Debian 12.

The script errored out when trying to create /etc/sudoers.d/gvm because the /etc/sudoers.d directory does not exist when the sudo package is not installed.

Installing sudo before running the script did solve the issue.

Fix: Add sudo package to the dependency / missing packages check.