TST: Replace Debian bullseye with ubuntu_latest to support numpy>=1.20 for exotic archs and because Debian bookworm is not available from the Docker images.
TST: Replace Debian bullseye with ubuntu_latest
to support numpy>=1.20 for exotic archs and because Debian bookworm is not
available from the Docker images.

Remove bookworm-backports for libwcs7 and wcslib-dev .

Pick up run-on-arch-action latest v2 to make this possible.

mhvk/astropy,mhvk/astropy,astropy/astropy,astropy/astropy,mhvk/astropy,pllim/astropy,astropy/astropy,astropy/astropy,mhvk/astropy,pllim/astropy,pllim/astropy,pllim/astropy,pllim/astropy,mhvk/astropy,astropy/astropy