this package seems to have new commits in its VCS but has
not yet updated debian/changelog. You should consider updating
the Debian changelog and uploading this new version into the archive.
Here are the relevant commit logs:
Author: Debian Janitor <firstname.lastname@example.org>
Date: Sat Oct 1 13:56:56 2022 +0000
Apply multi-arch hints.
+ python-mpl-sphinx-theme-doc: Add Multi-Arch: foreign.