add private to backup path

modules/homelab/services/glance/default.nix

@@ -323,7 +323,7 @@ in
     # add to backups
     homelab.backups.baks = {
       ${service} = {
-        paths = [ cfg.data_dir ];
+        paths = [ cfg.data_dir "/var/lib/private" ];
       };
     };