chore(deps): update dependency phpunit/phpunit to v12

Author: renovate[bot]

integration/composer.json

@@ -23,7 +23,7 @@
     },
     "require-dev": {
         "behat/behat": "^3.11",
-        "phpunit/phpunit": "^9.5"
+        "phpunit/phpunit": "^12.0"
     },
     "repositories": [
         {