chore: upgrade phpunit to 12.5

tests/Service/Teamer/TeamerProvisionerTest.php

@@ -17,6 +17,7 @@ use App\Entity\User;
 use App\Service\Teamer\TeamerProvisioner;
 use App\Service\Teamer\TeamerProvisioningException;
 use Doctrine\ORM\EntityManagerInterface;
+use PHPUnit\Framework\Attributes\AllowMockObjectsWithoutExpectations;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
 use Psr\Log\NullLogger;
@@ -28,6 +29,7 @@ use Psr\Log\NullLogger;
  * client: what runs, in which order, what is persisted before the next step, and what a retry does
  * after a failure halfway.
  */
+#[AllowMockObjectsWithoutExpectations]
 class TeamerProvisionerTest extends TestCase
 {
     private const SELECTION_ID = 1070;
@@ -366,7 +368,7 @@ class TeamerProvisionerTest extends TestCase
         return new TeamerProvisioner(
             $this->apiClient,
             $this->userDataHandler,
-            $this->createMock(EntityManagerInterface::class),
+            $this->createStub(EntityManagerInterface::class),
             new NullLogger(),
             self::SELECTION_ID,
         );