Related issue: https://github.com/armbian/build/issues/8261
Currently resolved for the beta repository. Now it's possible to switch to beta, update base-files and switch back to `apt.armbian.com`.
Fixing for stable marked as "todo".
Packages `base-files` 25.* are not not built for Debian Trixie, which prevents upgrades and in my case installing new software.
Managed to upgrade my system with some manual labour, but
apt.armbian.com/pool/trixie-utils/b/base-files/
Results in errors like:
/etc/armbian-image-release: