ci: bump from Debian 11 (bullseye) to 12 (bookworm)

Already in hard-freeze, so we don't have to worry about breaking changes.

Significant changes:
 - LLVM 15 is used instead of 11 or 13
 - /dev/shm has to be manually mounted
 - Debian 12 uses libdrm 2.4.114
 - reworked creating of rootfs, from debootstrap to mmdebstrap
 - split `create-rootfs.sh` into `lava_build.sh`, `setup-rootfs.sh`, and `strip-rootfs.sh`
 - dropped winehq repository for now (Debian wine is up-to-date enough)
 - we use wine now, no need to call explicitly call wine64
 - bumped libasan from version 6 to 8

Signed-off-by: David Heidelberg <david.heidelberg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21977>

.gitlab-ci/crosvm-init.sh

@@ -10,6 +10,8 @@ mount -t proc none /proc
 mount -t sysfs none /sys
 mkdir -p /dev/pts
 mount -t devpts devpts /dev/pts
+mkdir /dev/shm
+mount -t tmpfs -o noexec,nodev,nosuid tmpfs /dev/shm
 mount -t tmpfs tmpfs /tmp
 
 . ${VM_TEMP_DIR}/crosvm-env.sh