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/container/setup-rootfs.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC1091 # The relative paths in this file only become valid at runtime.
+# When changing this file, you need to bump the following
+# .gitlab-ci/image-tags.yml tags:
+# KERNEL_ROOTFS_TAG
+set -ex
+
+export DEBIAN_FRONTEND=noninteractive
+
+# Needed for ci-fairy, this revision is able to upload files to
+# MinIO and doesn't depend on git
+pip3 install --break-system-packages git+http://gitlab.freedesktop.org/freedesktop/ci-templates@ffe4d1b10aab7534489f0c4bbc4c5899df17d3f2
+
+# Needed for manipulation with traces yaml files.
+pip3 install --break-system-packages yq
+
+passwd root -d
+chsh -s /bin/sh
+
+cat > /init <<EOF
+#!/bin/sh
+export PS1=lava-shell:
+exec sh
+EOF
+chmod +x  /init
+
+# Copy timezone file and remove tzdata package
+rm -rf /etc/localtime
+cp /usr/share/zoneinfo/Etc/UTC /etc/localtime
+
+. strip-rootfs.sh