Add SSH key for emmbr26

manifests/init.pp

+# Just a dummy comment to silence linting
 class openspace_users {
   users::liu_user { 'emmbr26':
     commonname => 'Emma Broman',
     shell      => '/bin/bash',
-    sshkey     => '',
+    sshkey     => 'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGM+gqqrP3NDhSHIboUwfwJPlKRKqOkTF3gqbMcUoQDn <comment>',
   }
   users::liu_user { 'malej60':
     commonname => 'Malin Ejdbo',