gitlab-ci: some smallish updates for macOS jobs

Hi,

this patch series does some smallish updates for GitLab's CI jobs that exercise macOS.

Thanks!

Patrick

To: git@vger.kernel.org

--- b4-submit-tracking ---

This section is used internally by b4 prep for tracking purposes.

{ "series": { "revision": 1, "change-id": "20260521-b4-pks-gitlab-ci-updates-3b4a959f8e0c", "prefixes": [], "presubject": "" } }