salesforce-8.x-4.x-dev/modules/salesforce_logger/salesforce_logger.install

<?php

/**
 * @file
 * Logger install file.
 */

use Drupal\salesforce\Event\SalesforceEvents;

/**
 * Install Salesforce Logger default log level.
 */
function salesforce_logger_update_8001() {
  $settings = \Drupal::configFactory()->getEditable('salesforce_logger.settings');
  $settings->set('log_level', SalesforceEvents::NOTICE);
  $settings->save();
}