This update for proftpd fixes the following issues:

proftpd was updated to 1.3.7f - Released 04-Dec-2022

* Issue 1533 - mod_tls module unexpectedly allows TLS handshake after
  authentication in some configurations.
* Bug 4491 - unable to verify signed data: signature type 'rsa-sha2-512' does
  not match publickey algorithm 'ssh-rsa'.