ci/venus: Skip tests risking out of memory issues

ci/venus: Skip tests risking out of memory issues

These two dEQP tests:
 * dEQP-VK.api.object_management.max_concurrent.graphics_pipeline
 * dEQP-VK.api.object_management.max_concurrent.compute_pipeline

Require a lot of memory and might kill crosvm or the renderer server because of EOM
issues. Skip them for now.

Acked-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Signed-off-by: Corentin Noël <corentin.noel@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21306>