pm.zimbra has #93696 as the official 5.0.5 release change #. I've found that there is at least one bug: (
Bug 27239 - can not install/upgrade new build)
still in the official p4 cache #93696 that claims to have been fixed in #93693 - check out a higher change # for the fix (#93780 worked for me):
p4 sync -f //depot/zcs/FRANKLIN/ZimbraBuild/rpmconf/Upgrade/zmupgrade.pm@93780.