ci: disable intel-clc on debian-vulkan

ci: disable intel-clc on debian-vulkan

We're getting a number of UBSan error while running intel-clc in that
image. It seems that we're the first ones to run into a number of code
paths with intel-clc and it shows a number of undefined behavior
operations like signed extension stuff in NIR/IntelBackend, unaligned
pointer accesses in embedded list iterators, etc...

Preparing some patches in a different MR to fix this.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Ivan Briano <ivan.briano@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18788>