Puppetfile: use latest hiera module

Since https://github.com/voxpupuli/puppet-hiera/releases/tag/v7.0.0
contains my enhancements.

Author: kenyon

Puppetfile

@@ -6,9 +6,7 @@ mod 'puppet-augeasproviders_shellvar', :latest
 mod 'puppet-augeasproviders_sysctl', :latest
 mod 'puppet-chrony', :latest
 mod 'puppet-extlib', :latest
-mod 'puppet-hiera',
-  :git => 'https://github.com/voxpupuli/puppet-hiera.git',
-  :commit => 'fd0e76cfe0212528041e7ea19debbbf4eaf52bc0'
+mod 'puppet-hiera', :latest
 mod 'puppet-kmod', :latest
 mod 'puppet-letsencrypt', :latest
 mod 'puppet-logrotate', :latest