Replace deprecated Symfony\Component\HttpKernel\DependencyInjection\Extension (#951)

Author: mickverm

src/DependencyInjection/DoctrineMongoDBExtension.php

@@ -43,10 +43,10 @@
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Extension\Extension;
 use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
-use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\Messenger\MessageBusInterface;
 use Throwable;