GIT_SILENT Update Appstream for new release

(cherry picked from commit a748b512)
2 jobs for master in 5 minutes and 48 seconds (queued for 39 minutes and 51 seconds)
Status Job ID Name Coverage
  Build
passed #70869
linux kf5-qt5 qt5.12

00:05:48

0.0%
failed #70870
windows
windows kf5-qt5 qt5.13

 
Name Stage Failure
failed
windows kf5-qt5 qt5.13 Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
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