armbian11升级到12的步骤。
升级系统到最新
安装pgp key
touch /usr/share/keyrings/armbian.gpg
chmod 644 /usr/share/keyrings/armbian.gpg
wget https://apt.armbian.com/armbian.key -O - | gpg --dearmor >/usr/share/keyrings/armbian.gpg
修改apt源
/etc/apt/sources.list，/etc/apt/sources.list.d/armbian.list，/etc/apt/sources.list.d/docker.list，把bullseye替换成bookworm
更新
apt update
apt upgrade --no-new-pkgs
apt full-upgrade
apt dist-upgrade
更新过程中的选择全选默认，完成之后重启。
