[CI] Use Ubuntu 24.04 for dev-igc and unstable (#16255)
dev_igc and unstable need Ubuntu 24.04 now based on the IGC packaging,
so move our Dockerfiles and CI to use 24.04 for these.
I needed to manually bump the dev-igc version because the artifacts for
the current one are expired so they can't be downloaded anymore so we
can't make the Docker image.
The dev-igc CI run is expected to fail here, it always uses the official
intel/llvm Docker images, even if the current PR updates them, so we
need to wait for this PR to be merged to test it. I'll watch it once we
merge.
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Signed-off-by: Sarnie, Nick <nick.sarnie@intel.com>
