chore(deps): update dependency yoast/phpunit-polyfills to v4

Author: renovate[bot]

composer.json

@@ -40,7 +40,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^11.0",
-    "yoast/phpunit-polyfills": "^3.0",
+    "yoast/phpunit-polyfills": "^4.0",
     "rector/rector": "^2.0",
     "phpstan/extension-installer": "^1.4",
     "szepeviktor/phpstan-wordpress": "^2.0",