That's the nature of the Debian/Devuan release model. That package originates from Debian "stable". Packages are frozen every couple of years when a new stable release is cut. After they have been frozen, they are only ever updated to receive security and critical bug fixes. New features are out of the question.

If a new version is desired, a package maintainer may release a backport. If the end-user is someone who desires the latest and greatest packages, they may prefer to run "testing" or "unstable" releases of the operating system.

There is a newer version of RIng in ascii-backports which can enabled in Maemo Leste:
https://pkginfo.devuan.org/stage/asc...-1~bpo9+2.html

There have been initial preparations for Maemo Bayamo, the successor to Leste which is based on Devuan beowulf/testing. This will have a newer version of Ring:
https://pkginfo.devuan.org/stage/beo...~ds6-2+b1.html

Unstable now uses the version rebranded as Jami. I guess there will eventually be a version Maemo based on Devuan ceres/unstable but it isn't really a priority right now:
https://pkginfo.devuan.org/stage/cer...469~ds1-1.html