fix(hetzner): add source_ips to rules

firewall/provider/hetzner/app.nu

···
 # apply rules
 let resp = open $rulesFile | post $"/firewalls/($firewallId)/actions/set_rules"
 if $resp.status != 201 {
-  log error $"could not apply firewall \(id ($firewallId)\): \(($resp | to text)\)"
+  log error $"could not apply firewall \(id ($firewallId)\):\n($resp.body | to text)"
   exit 2
 }
 log info $"applied firewall ($firewallId)"

firewall/provider/hetzner/default.nix

···
         if l.isAttrs port
         then l.concatMapStringsSep "-" toString [port.from port.to]
         else toString port;
+      source_ips = ["0.0.0.0/0" "::/0"];
     };
     mkTcpRule = mkRule "tcp";
     mkUdpRule = mkRule "udp";