icon: update app icon

- GNOME 3.32 redesign of app icons.
  See Initiatives#2
  for more info.

/label ~"9. Initiative: AppIconRedesign"
3 jobs from wip/jimmac/app-icon-redesign in 52 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #185885
flatpak

00:00:29

 
  Deploy
passed #185886
review

00:00:22

manual #185887
allowed to fail manual
stop_review