Release v0.20200921.0

Signed-off-by: Simon McVittie <smcv@collabora.com>
6 jobs for master in 9 minutes and 21 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Test
manual #60854
allowed to fail manual
build:arch
passed #60850
build:asan

00:03:33

passed #60853
build:bionic

00:08:57

passed #60852
build:buster

00:09:20

passed #60851
build:stretch

00:09:20

passed #60849
build:ubsan

00:03:28