Used EntitySpecificationRepository as default entity repository

config/autoload/entity-manager.global.php

@@ -4,12 +4,15 @@ declare(strict_types=1);
 
 namespace Shlinkio\Shlink\Common;
 
+use Happyr\DoctrineSpecification\EntitySpecificationRepository;
+
 return [
 
     'entity_manager' => [
         'orm' => [
             'proxies_dir' => 'data/proxies',
             'load_mappings_using_functional_style' => true,
+            'default_repository_classname' => EntitySpecificationRepository::class,
         ],
         'connection' => [
             'user' => '',