appdata: Update developer name and contact info

Since maintainership has changed, we should use the new
maintainer's information in the appdata.
3 jobs for wip/christopherdavis/update-appdata-maintainer in 1 minute and 15 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #487594
flatpak

00:00:31

 
  Deploy
passed #487595
review

00:00:25

passed #487596
manual
stop_review

00:00:18