Update dependency phpunit/phpunit to v12

Author: renovate[bot]

vendor-bin/tools/composer.json

@@ -10,7 +10,7 @@
         "phpstan/phpstan": "^1.10.14",
         "phpstan/phpstan-phpunit": "^1.3.11",
         "phpstan/phpstan-strict-rules": "^1.5.1",
-        "phpunit/phpunit": "^10.1.2"
+        "phpunit/phpunit": "^12.0.0"
     },
     "config": {
         "allow-plugins": {