chore: upgrade phpunit to 12.5

tests/Logging/InjectUserProcessorTest.php

@@ -58,7 +58,7 @@ class InjectUserProcessorTest extends TestCase
 
     private function process(?InMemoryUser $user, string $sapi = 'fpm-fcgi'): LogRecord
     {
-        $security = $this->createMock(Security::class);
+        $security = $this->createStub(Security::class);
         $security->method('getUser')->willReturn($user);
 
         $processor = new InjectUserProcessor($security, $sapi);