use Symfony\Component\Routing\Annotation\Route;

 class SymfonyRoute
 {
-    /**
-     * @Route("/path", name="action") api route
-     */
+    #[Route(path: '/path', name: 'action')] // api route
     public function action()
     {
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Php80\Rector\Class_\AnnotationToAttributeRector;
use Rector\Php80\ValueObject\AnnotationToAttribute;

return RectorConfig::configure()
    ->withConfiguredRule(AnnotationToAttributeRector::class, [
        new AnnotationToAttribute('Symfony\\Component\\Routing\\Annotation\\Route'),
    ]);

SETS:  phpunit/phpunit 10.0 PHPUnit Attributes symfony/* 5.2 symfony/* 5.3 symfony/* 5.4 symfony/* 6.0 symfony/* 6.2 symfony/* 7.0 FOS Rest JMS Sensiolabs Symfony Symfony Validator Doctrine ORM Gedmo MongoDB