gdm: 47.alpha → 47.0
https://gitlab.gnome.org/GNOME/gdm/-/compare/47.alpha...47.0
Applied from pull request 343127.
Changelog-reviewed-by: Bobby Rong <rjl931189261@126.com>
authored by Fabián Heredia Montiel and committed by Bobby Rong 4a614c4a 8f30f0bd