Update dependency phpunit/phpunit to v12

Author: renovate[bot]

composer.json

@@ -32,7 +32,7 @@
   "require-dev": {
     "doctrine/orm": "^2.12",
     "friendsofphp/php-cs-fixer": "^3.3",
-    "phpunit/phpunit": "^9.5",
+    "phpunit/phpunit": "^12.0",
     "slope-it/clock-mock": "^0.4.0",
     "symfony/framework-bundle": "^5.4|^6.2",
     "symfony/http-client": "^5.4|^6.2",