* ci: update images, add arm64-rpi-debian12 build
* ci: add apt update and concurrency
* fix: use netcat-openbsd in build
* ci: add concurrency to all jobs
* fix: simplify image check and add python 3.11
* ci: update amd64 base image to Debian 12.0.0
* build: separate apt_installs
* add btrfs-progs only if not bookworm on aarch64
* build: remove armbian, add aarch64 debian
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Co-authored-by: /rootzoll <christian@geektank.de>
