util-docker: Add 'ubuntu-22.04_gcc-version'

Now that ubuntu 22.04 has been released we can use it to test newer GCC
compilers. GCC-11 has been moved to use this image.

Change-Id: I3b0dbd82112068f19682e5cf19ffbe81f3d18149
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/64173
Reviewed-by: Kunal Pai <kunpai@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed