vmdb2 version 0.40 released

I've just pushed out the release 0.40 of vmdb2, my tool for creating a disk image with Debian installed. The release notes are below.

Version 0.40, released 2024-03-23

Version number is bumped a lot to avoid some incorrectly tagged versions that Lars is very sorry for. Other than that, this version is mainly a few bug fixes, mostly from other people.

Documentation fix: README.md points to base.vmdb as an example, rather than pc.vmdb, which has long since been deleted.
ppc64el.vmdb has been fixed so that it at least builds. It's unknown whether it builds an image that boots.
From Matej Kovac, fixes to resolv.conf configuration: don't copy the host's configuration.
From Peter Palfrader, a fix the cryptsetup plugin to import the logging module.
From Victor Westerhuis, a fix to using the right grub-ieee1275 depending on the target system.