Bump version to 21.1.2.901

Xwayland 21.1.3 release candidate 1.

Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
3 jobs for xwayland-21.1.3-rc1 in 1 minute and 57 seconds (queued for 9 seconds)
Status Name Job ID Coverage
  Docker Image
passed debian-buster #14975235

00:00:10

 
  Build And Test
passed meson #14975236

00:01:46

passed meson-noglamor #14975237

00:01:25