The package has a debian/watch file, but the last attempt
to use it for checking for newer upstream versions failed with
an error:
In debian/watch no matching files for watch line https://www.orthanc-server.com/browse.php?path=/plugin-postgresql downloads/get\.php\?path=/plugin-postgresql/OrthancPostgreSQL-(\d\S*)\.tar\.gz
testing migration
This package will soon be part of the auto-protobuf transition. You might want to ensure that your package is ready for it.
You can probably find supplementary information in the
debian-release
archives or in the corresponding
release.debian.org
bug.