Much like T306492: *.beta.wmflabs.org Certificate has expired (April 2022 edition), visiting https://en.wikipedia.beta.wmflabs.org/wiki/Main_Page gives you a SSL cert expiry warning.
Looking at deployment-cache-text07, I note puppet is disabled:
deployment-cache-text07 is a text Varnish/ATS cache server (cache::text) The last Puppet run was at Fri Jun 17 17:04:05 UTC 2022 (2479 minutes ago). Puppet is disabled. experiment - ori Last puppet commit: (937e9911ed1) root - deployment-prep: add keyholder agent for scap
but I don't know enough about acme-chief etc. to guess if that'd be an issue..
years expiries start coming and they don't stop coming