drm/ci: uprev mesa

LAVA was recently patched [1] with a fix on how parameters are parsed in
`lava-test-case`, so we don't need to repeat quotes to send the
arguments properly to it. Uprev mesa to fix this issue.

[1] https://gitlab.com/lava/lava/-/commit/18c9cf79



Signed-off-by: Vignesh Raman <vignesh.raman@collabora.com>
Acked-by: Helen Koike <helen.fornazier@gmail.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Link: https://lore.kernel.org/r/20250314085858.39328-2-vignesh.raman@collabora.com