Issue #3252126: Detect DB updates and do not apply a update via cron if there is a DB update

tests/src/Kernel/ReadinessValidation/StagedProjectsValidatorTest.php

@@ -7,6 +7,7 @@ use Drupal\package_manager\Event\PreApplyEvent;
 use Drupal\package_manager\Exception\StageValidationException;
 use Drupal\package_manager\PathLocator;
 use Drupal\Tests\automatic_updates\Kernel\AutomaticUpdatesKernelTestBase;
+use Drupal\Tests\automatic_updates\Kernel\TestUpdater;
 use org\bovigo\vfs\vfsStream;
 use Symfony\Component\Filesystem\Filesystem;