ci: Uprev piglit to 9d87cc3d79e ("framework/replay: send backend's subprocess stderr...

ci: Uprev piglit to 9d87cc3d79e ("framework/replay: send backend's subprocess stderr to sys.stderr")

This pulls in a fix for replayer to make the backends send their
stderr to sys.stderr always.

v2:
  - Updated piglit results for llvmpipe, softpipe, zink and
    radeonsi-stoney.

Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> [v1]
Reviewed-by: Martin Peres <martin.peres@mupuf.org> [v1]
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10854>