net-mgmt/zabbix64-server: Update to 6.4.8

Reported by:    portscout

net-mgmt/zabbix64-server/Makefile

 PORTNAME=	zabbix64
-DISTVERSION=	6.4.7
+DISTVERSION=	6.4.8
 PORTREVISION?=	0
 CATEGORIES=	net-mgmt
 MASTER_SITES=	https://cdn.zabbix.com/zabbix/sources/stable/${DISTVERSION:R}/

net-mgmt/zabbix64-server/distinfo

-TIMESTAMP = 1695795489
-SHA256 (zabbix-6.4.7.tar.gz) = 6b4e81f07de4c82c7994871bea51be4d6427683fa9a7fbe112fd7559b3670e49
-SIZE (zabbix-6.4.7.tar.gz) = 44036704
+TIMESTAMP = 1698874789
+SHA256 (zabbix-6.4.8.tar.gz) = 6daf750a3a5973e418f501b6ad1f3fee02341a8f15fd4a9a41c41923925f575f
+SIZE (zabbix-6.4.8.tar.gz) = 44165922