Update changelog for 0.4.0-1pureos1 release

5 jobs for wip/exalm/byzantium in 4 minutes and 4 seconds
Status Name Job ID Coverage
  Package
passed package-pureos-byzantium #376935
librem5

00:01:29

passed package-pureos-byzantium:arm64 #376936
librem5:arm64

00:04:04

 
  Test Package
passed autopkgtest-pureos-byzantium-package #376937
librem5

00:00:58

passed check-tarball #376939
librem5

00:00:43

passed lintian-pureos-byzantium-package #376938
librem5

00:00:55