Nicolás Alvarez authored Aug 30, 2021 and Eike Hein committed Aug 31, 2021

The build_clazy_clang_tidy CI job on GitLab was still using ci-suse-qt514,
for which we don't maintain dependencies in Jenkins anymore, so it failed
to build, saying it couldn't find any dependencies. Update it to use
ci-suse-qt515.