mail/sympa: update to 6.2.72
- change maintainer email to maintainer's new address
many fixes and improvements, including:
- ARC fixes
- WWSympa: New "cgi" authentication simply using credentials provided by HTTP server
- Use DSN for the message to notify moderation
- RFC 8058 One-Click Unsubscribe
- Delete user account completely
Changelog: https://www.sympa.community/2023/06/01/sympa-6272-released.html
PR: 274767