GIT_SILENT Update Appstream for new release

(cherry picked from commit a43a5c93)
2 jobs for master in 16 minutes and 59 seconds (queued for 46 minutes and 28 seconds)
Status Job ID Name Coverage
  Build
passed #55217
build_clazy_clang_tidy

00:10:29

passed #55216
linux kf5-qt5 qt5.12

00:06:29

75.0%