Update to 3.2.4

Changelog:

• DANE interoperability. Postfix builds with OpenSSL 1.0.0 or 1.0.1 failed to send email to some sites with "TLSA 2 X X" DNS records associated with an intermediate CA certificate. Problem report and initial fix by Erwan Legrand.
• Missing dynamicmaps support in the Postfix sendmail command. This broke authorized_submit_users settings that use a dynamically-loaded map type. Problem reported by Ulrich Zehl.

PR: 223804
Submitted by: zeising
Approved by: maintainer timeout