[ANNOUNCE] Wayland 1.23.0 release schedule

[Simon Ser]

Hi all,

Here is the release schedule for Wayland 1.23.0:

- Alpha: April 25th (in 2 weeks)
- Beta: May 9th
- RC1: May 23rd
- First potential final release: May 30th

Package maintainers are encouraged to pick up the pre-releases to make
sure packaging can be tested (and fixed) before the stable release.

Let me know if you'd like a pending patch to make it in the release.

Thanks,

Simon