Upgraded to Foreman 2.5.4, now `Puppet Report processor failed: Could not send report to Foreman`

The certificate is valid, as far as the host is concerned:

# openssl s_client -connect foreman.example.org:443 0>/dev/null 2>/dev/null | sed -ne '/---BEGIN CERTIFICATE---/,/---END CERTIFICATE---/p' | openssl x509 -noout -dates
notBefore=May  5 00:00:00 2020 GMT
notAfter=May  5 23:59:59 2022 GMT

But I’m not sure what Puppet or Foreman uses to do the same.