Among the 3 debian patches available in version 1.31-6 of the package, we noticed the following issues:
commit ccbe4bfb93b5662804c7f16aab6a9361d81bb0d5 Author: Debian Janitor <janitor@jelmer.uk> Date: Fri Oct 28 05:47:07 2022 +0000 Remove constraints unnecessary since buster (oldstable) * Build-Depends: Drop versioned constraint on libtokyocabinet-dev. Changes-By: deb-scrub-obsolete