feat: upgrade phpunit to 12.5

tests/Command/MailjetNewsletterWebhookCommandTest.php

@@ -90,7 +90,7 @@ class MailjetNewsletterWebhookCommandTest extends TestCase
             $mailjetApiClient,
             'https://my.ep-reisen.de',
             'secret',
-            $this->createMock(LoggerInterface::class),
+            $this->createStub(LoggerInterface::class),
         );
     }
 }