[luxembourg] Put petitprince-6 to RETIRED.
Related to bug 14329.
Petitprince-6 cannot boot without user intervention due to a memory error.
With Hyacinthe, we have decided to put the node to RETIRED.
GitLab upgrade completed. Current version is 18.3.6
https://about.gitlab.com/releases/2025/07/17/gitlab-18-2-released/
https://about.gitlab.com/releases/2025/08/21/gitlab-18-3-released/
Related to bug 14329.
Petitprince-6 cannot boot without user intervention due to a memory error.
With Hyacinthe, we have decided to put the node to RETIRED.