d/librem5-ci.yml: Use byzantium

5 jobs for gbp in 4 minutes and 46 seconds
Status Name Job ID Coverage
  Package
passed package-pureos-byzantium #368522
librem5

00:01:02

passed package-pureos-byzantium:arm64 #368523
librem5:arm64

00:03:06

 
  Test Package
passed autopkgtest-pureos-byzantium-package #368524
librem5

00:00:48

passed check-tarball #368526
librem5

00:00:50

passed lintian-pureos-byzantium-package #368525
librem5

00:00:41