mail/sympa: Update to 6.2.76

Upstream Changes:
Full list here: https://github.com/sympa-community/sympa/blob/6.2.76/NEWS.md

Many bugs fixed, including

• Bulk moderation of messages is broken
• Broken "distribute" confirmation
• LISTNAME-request@DOMAIN aliases are not supported
• Bug in custom_subject rendering
• [CVE-2024-55919] Improper input validation on generic SSO login
• DKIM signing and ARC sealing order is reversed
• WWSynmpa: do_distribute: Confirmation was not always performed
• WWSympa: Fixes for Sympa Accessibility Issues
• Display name in From: header field should be quoted / unquoted appropriately
• Meaningful error message should be shown for unauthenticated user if privileges are required
• DKIM: i= tag may not match in some auto-generated messages
• The length of boundary lines in multipart messages could exceed 70 octets
• Setting invite sender as From: field should be avoided
• WWSympa: Uploaded file names in UTF-8 were garbled
• [moderation] Show message content when clicking on its object
• PostgreSQL/SQLite: Sympa tries creating temporary views in databases unnecessarily
• From: header sanitation fails with brackets and Umlauts: Bug in MIME-EncWords
• Stop "do_distribute" actions from Web interface from generating backscatter emails to sympa-request alias
• Fix cross-robot list inclusion
• DKIM signatures in outgoing messages are no longer removed

Enhancements

• WWSympa: Invitations via the Sympa website
• WWSympa: Detect web crawlers
• Support for LDAP paged queries and dereferenced responses
• Overall statistics panel
• Add .eml extension to archives files
• Improve diagnostic messages in the DSNs generated by Sympa
• Allow "custom_subject" to be at the beginning of the subject

While here fix various port bugs [1]

PR: 283921, 275715 [1]