Since yesterday, Bugzilla requires Template-Toolkit 2.22 (it fixes a UTF-8 bug). This means that the next version of Bugzilla will require it and I'ld really appreciate it if we could update perl-Template-Toolkit straight away.
Update is in rawhide, thanks for the report.
perl-Template-Toolkit-2.22-3.el5 has been submitted as an update for Fedora EPEL 5. http://admin.fedoraproject.org/updates/perl-Template-Toolkit-2.22-3.el5