[Qlustar General] Security/Bug fix releases 14.1.16, 13.4.15

The Qlustar releases 14.1.16 and 13.4.15 are ready including a number of security/bug fixes. Please check the following web pages for details about security fixes and special update instructions: https://qlustar.com/qsa/2026/1022261 https://qlustar.com/qsa/2026/1022262 This update includes fixes for the critical PHP bugs CVE-2026-109618 and CVE-2026-109619. Note that Qlustar 14 does not use or install PHP per default. Qlustar 13 installations however do, so you should upgrade such installations as soon as possible or shut down the apache web server on the head-node as a temporary measure (this will disable the ganglia and Nagios web pages). No non-security related updates/enhancements/bug fixes are included.