chore(deps): update phpunit packages

Author: renovate[bot]

composer.json

@@ -8,8 +8,8 @@
     }
   ],
   "require-dev": {
-    "phpunit/phpunit": "^9.6.31",
-    "yoast/phpunit-polyfills": "^2.0.5",
+    "phpunit/phpunit": "^12.5.4",
+    "yoast/phpunit-polyfills": "^4.0.0",
     "tangible/framework": "dev-main"
   },
   "require": {},