Packagecloud repo signing keys expiring 2024-03-01

Summary

The package repository metadata signing key (managed on instance) will expire on 2024-03-01. This must be extended or rotated prior to that date. Preferably with more than one months' preparation.

Runbook

https://gitlab.com/gitlab-com/runbooks/-/blob/master/docs/packagecloud/manage-repository-metadata-signing-keys.md

Related Issues

Related to #356 (closed), gitlab-com/runbooks#38 (moved), gitlab-org/omnibus-gitlab#6701 (closed)