fix(trogon-nats): use hardcoded 127.0.0.1 in no-Docker unreachable server test

Signed-off-by: Jorge <jramirezhdez02@gmail.com>

Author: jramirezhdez02

rsworkspace/crates/trogon-nats/tests/connect_integration.rs

@@ -191,7 +191,7 @@ async fn connect_to_unreachable_server_returns_ok_with_background_retry() {
     let port = listener.local_addr().unwrap().port();
     drop(listener);
 
-    let config = NatsConfig::new(vec![format!("nats://{host}:{port}")], NatsAuth::None);
+    let config = NatsConfig::new(vec![format!("nats://127.0.0.1:{port}")], NatsAuth::None);
 
     // connect() must return within a few seconds (INITIAL_CONNECT_CHECK_SECS + margin).
     let result = tokio::time::timeout(