GIT_SILENT Update 21.12 changelog

4 jobs for master in 45 seconds (queued for 7 seconds)
Status Name Job ID Coverage
  Build
passed android_qt515 #171143
Linux

00:00:15

passed freebsd_qt515 #171144
FreeBSD

00:00:25

passed reuse #171141
reuse

00:00:17

passed suse_tumbleweed_qt515 #171142
Linux

00:00:45