5e413f4919
The previous commit has freed up a couple of runners, so let's repurpose them to make vk test jobs take less time; with that spare time, let's increase the coverage a little bit. Most jobs now take 10-12 minutes, just like they used to. Stress-tested over 40+ runs. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21902>