.gitlab-ci.yml: fix jobs not being scheduled anywhere, switch to quay.io/podman/stable
GitLab 1.70 has deprecated shared
runner tag:
https://docs.gitlab.com/ee/update/deprecations.html#removal-of-tags-from-small-saas-runners-on-linux
GitLab 1.70 has deprecated shared
runner tag:
https://docs.gitlab.com/ee/update/deprecations.html#removal-of-tags-from-small-saas-runners-on-linux