Merge branch 'wip/validate-app-data' into 'master'

Validate both appdata and desktop files

See merge request !139
4 jobs for master in 37 minutes and 42 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #225940
fedora

00:15:45

passed #225941
ubuntu

00:33:08

 
  Test
passed #225942
deb-package

00:03:04

passed #225943
flatpak

00:04:32