community/gnome: upgrade to 47.4
and some MRs that would be nice to merge aswell:
- gnome-control-center (master !79371 (merged); 3.21 already merged)
- libadwaita (master !80086 (merged); 3.21 !79509 (merged))
- libspelling (master already merged; 3.21 !79088 (merged))
and !79446 (merged) would be nice aswell