fix: Update test to use IP4

pact_mock_server/src/tests.rs

@@ -213,14 +213,15 @@ fn match_request_with_header_with_multiple_values() -> anyhow::Result<()> {
  let id = "match_request_with_header_with_multiple_values".to_string();
  let mock_server_builder = MockServerBuilder::new()
  .with_v4_pact(pact)
- .with_id(id.clone());
+ .with_id(id.clone())
+ .bind_to("127.0.0.1:0");
  let result = manager.spawn_mock_server(mock_server_builder);
  let mock_server = result.unwrap();
  let port = mock_server.port();
 
  info!("Mock server port = {}", port);
  let client = reqwest::blocking::Client::new();
- let response = client.get(format!("http://[::1]:{}", port).as_str())
+ let response = client.get(format!("http://127.0.0.1:{}", port).as_str())
  .header(ACCEPT, "application/hal+json, application/json").send();
 
  let mismatches = manager.find_mock_server_by_id(&id, &|_, ms| {