Any change in .gitlab-ci/ directory triggers an entire CI run,
which is unnecessary for just changing the developers' scripts.
Added symlink to `.gitlab-ci/bin` to keep original invocation compatibility.
Reviewed-by: Martin Roukala <martin.roukala@mupuf.org>
Reviewed-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Signed-off-by: David Heidelberg <david.heidelberg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20371>
