feat: upgrade phpunit to 12.5

tests/Controller/Groups/Booking/IndexControllerTest.php

@@ -53,8 +53,8 @@ class IndexControllerTest extends TestCase
     private function makeController(): TestableAccommodationIndexController
     {
         return new TestableAccommodationIndexController(
-            $this->createMock(AccommodationBookingService::class),
-            $this->createMock(AccommodationSessionManager::class),
+            $this->createStub(AccommodationBookingService::class),
+            $this->createStub(AccommodationSessionManager::class),
         );
     }
 }