sed -i 's/jammy/noble/g' /etc/apt/sources.list
sed -i 's/ubuntu 22/ubuntu 24/g' /etc/apt/sources.list.d/zammad.list
apt clean; apt update
apt upgrade
apt dist-upgrade

pg_dropcluster --stop 16 main
pg_upgradecluster 14 main /var/lib/postgresql/16/

apt autoremove
shutdown -r now