.github: Explicitly set build-commits job runner image version
.github: Explicitly set build-commits job runner image version

github: Install libtinfo5 for clang in build-commits CI job

Signed-off-by: Chance Zibolski <0671e890c734ee0cb7f0027fb3ef2496c29582eb@gmail.com>

cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium