Update puppet-postgresql and remove unless

modules/discourse/manifests/admin.pp

 define discourse::admin(
   $email = $title,
   $ensure = 'present'
 ) {
   # Attempt some escaping
   $escaped_email = regsubst($email, '[\'\\]', '\\\1', 'G')
 
   case $ensure {
     default: {
       err("unknown ensure value ${ensure}")
     }
     present: {
       # Only confirmed accounts should be made admins
       postgresql_psql {"UPDATE users SET admin = true WHERE email = '$escaped_email' AND EXISTS (SELECT * FROM email_tokens WHERE email_tokens.user_id = users.id AND email_tokens.email = users.email AND email_tokens.confirmed)":
         db => 'discourse',
-        psql_user => 'discourse',
-        unless => 'SELECT false'
+        psql_user => 'discourse'
       }
     }
     absent: {
       postgresql_psql {"UPDATE users SET admin = false WHERE email = '$escaped_email'":
         db => 'discourse',
-        psql_user => 'discourse',
-        unless => 'SELECT false'
+        psql_user => 'discourse'
       }
     }
   }
 }