OPENSUSE-SU-2026:21368-1 Security update for cyrus-imapd

This update for cyrus-imapd fixes the following issues: Changes in cyrus-imapd: - Update to 3.8.7 bugfix release - CVE-2026-47081: XAPPLEPUSHSERVICE folder existence oracle and push hijack bsc1271617 - CVE-2026-47083: ESEARCH cross-user content oracle bsc1271619 - CVE-2026-47082: Vacation "fcc"...