chore(deps): update dependency phpunit/phpunit to v13

Author: renovate[bot]

php/composer.json

@@ -26,7 +26,7 @@
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.0",
         "phpstan/phpstan": "^2.1",
-        "phpunit/phpunit": "^12.0",
+        "phpunit/phpunit": "^13.0",
         "phpstan/extension-installer": "^1.4"
     },
     "config": {