Update changelog

Signed-off-by: Simon McVittie <smcv@collabora.com>
4 jobs for master in 7 minutes and 42 seconds
Status Job ID Name Coverage
  Test
manual #38779
allowed to fail manual
build:arch
passed #38778
build:bionic

00:07:41

passed #38777
build:buster

00:07:41

passed #38776
build:stretch

00:07:18