Updated version files for release
--HG-- branch : heptapod-0-21
This instance will be upgraded to Heptapod 0.31.0 (final) on 2022-05-24 at 14:00 UTC+2 (a few minutes of down time)
--HG-- branch : heptapod-0-21
mentioned in commit 7a205dd1e825
·mentioned in commit 7a205dd1e825