tests/docker: upgrade debian-all-test-cross to bookworm

This requires a few more tweaks than usual as:

  - the default sources format has changed
  - bring in python3-tomli from the repos
  - split base install from cross compilers
  - also include libclang-rt-dev for sanitiser builds

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231029145033.592566-16-alex.bennee@linaro.org>

tests/docker/dockerfiles/debian-all-test-cross.docker

@@ -6,10 +6,10 @@
 # basic compilers for as many targets as possible. We shall use this
 # to build and run linux-user tests on GitLab
 #
-FROM docker.io/library/debian:11-slim
+FROM docker.io/library/debian:12-slim
 
 # Duplicate deb line as deb-src
-RUN cat /etc/apt/sources.list | sed "s/^deb\ /deb-src /" >> /etc/apt/sources.list
+RUN sed -in "s/Types: deb/Types: deb deb-src/g" /etc/apt/sources.list.d/debian.sources
 
 RUN export DEBIAN_FRONTEND=noninteractive && \
     apt-get update && \
@@ -25,7 +25,16 @@ RUN DEBIAN_FRONTEND=noninteractive eatmydata \
         clang  \
         flex \
         git \
+        libclang-rt-dev \
         ninja-build \
+        python3-pip \
+        python3-setuptools \
+        python3-tomli \
+        python3-venv \
+        python3-wheel
+
+RUN DEBIAN_FRONTEND=noninteractive eatmydata \
+        apt install -y --no-install-recommends \
         gcc-aarch64-linux-gnu \
         libc6-dev-arm64-cross \
         gcc-arm-linux-gnueabihf \
@@ -53,13 +62,8 @@ RUN DEBIAN_FRONTEND=noninteractive eatmydata \
         gcc-s390x-linux-gnu \
         libc6-dev-s390x-cross \
         gcc-sparc64-linux-gnu \
-        libc6-dev-sparc64-cross \
-        python3-pip \
-        python3-setuptools \
-        python3-venv \
-        python3-wheel
+        libc6-dev-sparc64-cross
 
-RUN /usr/bin/pip3 install tomli
 
 ENV QEMU_CONFIGURE_OPTS --disable-system --disable-docs --disable-tools
 ENV DEF_TARGET_LIST aarch64-linux-user,arm-linux-user,hppa-linux-user,i386-linux-user,m68k-linux-user,mips-linux-user,mips64-linux-user,mips64el-linux-user,mipsel-linux-user,ppc-linux-user,ppc64-linux-user,ppc64le-linux-user,riscv64-linux-user,s390x-linux-user,sparc64-linux-user