Packages for MPD v0.23.2 are built for debian/amd64 Buster and rapsbian/armhf Buster.
io_uring support is disabled, with Debian/buster kernel does not support io_uring and regarding Raspbian/Buster, liburing is not available in the main repo.
These packages are built against the current libmpdclient 2.16-1 from official Debian repository.
You can add deb.kaliko.me
to your source list to follow future builds.