Drop the bookworm-rust image, we'll use multipython

bookworm-rust/Dockerfile

-# syntax=docker/dockerfile:experimental
-FROM rust:bookworm
-
-USER root
-
-RUN export DEBIAN_FRONTEND=noninteractive && \
-  apt-get --allow-releaseinfo-change update && \
-  apt-get -y dist-upgrade && \
-  apt-get install -y \
-    cmake