Update database to 1.3.1 with changes for attendee mail notification handling
This is some old work I'v cleaned up from Milan Medlik that should have been in the tree years ago, but database changes are always a bit more problematic.
The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The second breaking change window begins 2024-04-29 09:00 UTC and ends 2024-05-01 22:00 UTC.
This is some old work I'v cleaned up from Milan Medlik that should have been in the tree years ago, but database changes are always a bit more problematic.