Puppet apt repo GPG key expired 2025-04-06, apt-get update fails on noble
Puppet published a renewed key (DEB-GPG-KEY-future, the same release key without the hard-coded expiry, per a reporter's gpg analysis in the thread); the issue was closed the day after the expiry. Re-run apt-get update; if your keyring still holds the expired key, re-import the renewed key from
Problem outcome: unknown