GIT_SILENT Update Appstream for new release

(cherry picked from commit 393f820c)
2 jobs for master in 18 minutes and 9 seconds (queued for 65 minutes)
Status Job ID Name Coverage
  Build
passed #60933
build_clazy_clang_tidy

00:08:22

passed #60932
linux kf5-qt5 qt5.12

00:09:46

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