AQuA server Ubuntu upgrade

[mshannon-sil]

The AQuA server is currently using Ubuntu 20.04, which will lose support in April of next year. We should upgrade the server to Ubuntu 22.04, since that's the highest version of Ubuntu that is supported by Lambda Stack, which manages upgrades for our NVIDIA drivers on the server and other AI related software/firmware. According to the TechOps team, we should budget at least 3 hours for the upgrade. Therefore, we should wait to do this until the autoscaler is fully integrated so jobs can still be run, and we should also schedule this for a time when not many jobs will be running.