Merge pull request #253427 from Yarny0/sshd-requiredrsasize

nixos/sshd: don't validate mock host key, permit `RequiredRSASize`

nixos/modules/services/networking/ssh/sshd.nix

···
     ${cfg.extraConfig}
     EOL
 
-    ssh-keygen -q -f mock-hostkey -N ""
-    sshd -t -f $out -h mock-hostkey
+    sshd -G -f $out
   '';
 
   cfg  = config.services.openssh;