Fix Symfony 8.1 DependencyInjection deprecation warning

Author: 30Sana

src/DependencyInjection/WebpackEncoreExtension.php

@@ -18,7 +18,7 @@
 use Symfony\Component\DependencyInjection\Definition;
 use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
 use Symfony\Component\DependencyInjection\Reference;
-use Symfony\Component\HttpKernel\DependencyInjection\Extension;
+use Symfony\Component\DependencyInjection\Extension\Extension;
 use Symfony\Component\WebLink\EventListener\AddLinkHeaderListener;
 use Symfony\WebpackEncoreBundle\Asset\EntrypointLookup;
 use Symfony\WebpackEncoreBundle\Asset\EntrypointLookupInterface;