feat: add puppetserver gem for toml

- require toml for puppetserver gem

site/profiles/manifests/puppet/gems.pp

@@ -9,4 +9,8 @@ class profiles::puppet::gems (
       provider => 'puppet_gem',
     }
   }
+  package { 'toml':
+    ensure   => ['0.3.0'],
+    provider => 'puppetserver_gem',
+  }
 }