Update dependency phpunit/phpunit to v12.3.6

Author: renovate[bot]

composer.json

@@ -67,7 +67,7 @@
         "phpstan/phpstan-doctrine": "2.0.4",
         "phpstan/phpstan-phpunit": "2.0.6",
         "phpstan/phpstan-symfony": "2.0.6",
-        "phpunit/phpunit": "12.3.5",
+        "phpunit/phpunit": "12.3.6",
         "psalm/plugin-phpunit": "0.19.3",
         "psalm/plugin-symfony": "5.2.7",
         "rector/rector": "2.1.1",