hosts/vps1: fix nginx resolver issues

hosts/vps1/headscale.nix

@@ -60,7 +60,7 @@ in
       forceSSL = true;
       enableACME = true;
       locations."/" = {
-        proxyPass = "http://localhost:${toString config.services.headscale.port}";
+        proxyPass = "http://127.0.0.1:${toString config.services.headscale.port}";
         proxyWebsockets = true;
       };
     };