Popsu-coloque/web/core/profiles/testing_site_config/testing_site_config.install

<?php

/**
 * @file
 * Install functions for the testing_site_config module.
 */

/**
 * Implements hook_install().
 */
function testing_site_config_install() {
  // Set the site email address to something that is not sendmail_from.
  \Drupal::configFactory()->getEditable('system.site')
    ->set('mail', 'profile-testing-site-config@example.com')
    ->save(TRUE);

  // Set the time zone to something that is not the system timezone (which is
  // Australia/Sydney in the testing environment).
  \Drupal::configFactory()->getEditable('system.date')
    ->set('timezone.default', 'America/Los_Angeles')
    ->save(TRUE);
}