55 Upgrade notes for 6.0.45

Item values displayed as HTML using iframes

Item data in the Plain text widget, when displayed as HTML-formatted text, is now isolated in iframes.

Updated SAML PHP Toolkit library and minimum required PHP version

The SAML PHP Toolkit library (supplied with Zabbix) has been updated from version 4.0.0 to 4.3.1. This version requires PHP 7.3 or later, regardless of whether you are using SAML authentication. Because of this, the minimum required PHP version for Zabbix has been raised to 7.3.