openSUSE 15.6 kea Important Stack Overflow Fix 2026-1548-1

## This update for kea fixes the following issues: Update to release 2.6.5. Security issues fixed: * CVE-2026-3608: stack overflow error via specially crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons(bsc#1260380). Other updates and bugfixes: * A null dereference is now no longer possible when configuring the Control Agent with a socket that lacks the mandatory socket-name entry. * UNIX sockets are now created as group-writable. * Corrected an issue in logging configuration when parsing "syslog:". * Fixed crash when handling misconfigured global reservations. * Support for recent versions of Sphinx has been added. ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".