Log Message:
mail/roundcube: update to 1.6.6

1.6.6 (2024-01-20)

* Fix regression in handling LDAP search_fields configuration parameter
  (#9210)
* Enigma: Fix finding of a private key when decrypting a message using GnuPG
  v2.3
* Fix page jump menu flickering on click (#9196)
* Update to TinyMCE 5.10.9 security release (#9228)
* Fix PHP8 warnings (#9235, #9238, #9242, #9306)
* Fix saving other encryption settings besides enigma's (#9240)
* Fix unneeded php command use in installto.sh and deluser.sh scripts
  (#9237)
* Fix TinyMCE localization installation (#9266)
* Fix bug where trailing non-ascii characters in email addresses could have
  been removed in recipient input (#9257)
* Fix IMAP GETMETADATA command with options - RFC5464