[CI] Default environment jobs to Ubuntu 22.04 instead of Ubuntu 20.04

[raulcd]

Describe the enhancement requested

Ubuntu 24.04 is about to be available.

I think it's about time we move our default .env to UBUNTU=22.04.

This task is to cover that work.

Component(s)

Continuous Integration

[raulcd]

Issue resolved by pull request 44151
#44151