Merge branch '5.4' into 6.0

* 5.4:
  reflect Cache component version dependent default value in test

Author: xabbuh

Tests/DependencyInjection/ConfigurationTest.php

@@ -15,6 +15,7 @@
 use PHPUnit\Framework\TestCase;
 use Symfony\Bundle\FrameworkBundle\DependencyInjection\Configuration;
 use Symfony\Bundle\FullStack;
+use Symfony\Component\Cache\Adapter\DoctrineAdapter;
 use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
 use Symfony\Component\Config\Definition\Processor;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -501,7 +502,7 @@ protected static function getBundleDefaultConfig()
                 'default_redis_provider' => 'redis://localhost',
                 'default_memcached_provider' => 'memcached://localhost',
                 'default_doctrine_dbal_provider' => 'database_connection',
-                'default_pdo_provider' => ContainerBuilder::willBeAvailable('doctrine/dbal', Connection::class, ['symfony/framework-bundle']) ? 'database_connection' : null,
+                'default_pdo_provider' => ContainerBuilder::willBeAvailable('doctrine/dbal', Connection::class, ['symfony/framework-bundle']) && class_exists(DoctrineAdapter::class) ? 'database_connection' : null,
                 'prefix_seed' => '_%kernel.project_dir%.%kernel.container_class%',
             ],
             'workflows' => [