Bug#1054155: Missing new needed dependency on libgtk-4-media-gstreamer

[debian]

Package: gnome-clocks
Version: 45.0-1

Since the merge of 
https://gitlab.gnome.org/GNOME/gnome-clocks/-/merge_requests/253, GNOME 
Clocks uses GTK MediaStream, which is provided by 
libgtk-4-media-gstreamer, but that package has not been added to the 
dependencies of gnome-clocks in Debian. This results in no sound for 
events (alarms, countdown timers). Manually installing the package fixes 
the issue.