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: Jamie Wilkinson <firstname.lastname@example.org>
Date: Sat Oct 23 19:22:17 2021 +1100
Fix the license in debian/copyright.
libnss-cache is LGPL-3, not GPL-2+.