hydra: update eval frequency

.forgejo/workflows/nightly-update.yaml

@@ -1,6 +1,6 @@
 on: 
   schedule:
-    - cron: 0 3 * * *
+    - cron: 0 */4 * * *
   
 jobs:
   UpdateFlake:

flake.nix

@@ -164,6 +164,7 @@
 
       hydraJobs = {
         hosts = lib.mapAttrs (_: cfg: cfg.config.system.build.toplevel) self.outputs.nixosConfigurations;
+        packages = self.packages;
       };
     };
 }