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

Author: renovate[bot]

composer.json

@@ -87,7 +87,7 @@
     "friendsofphp/php-cs-fixer": "3.75.0",
     "overtrue/phplint": "9.6.2",
     "phpstan/phpstan": "1.12.25",
-    "phpunit/phpunit": "10.5.46",
+    "phpunit/phpunit": "12.1.6",
     "squizlabs/php_codesniffer": "3.13.0"
   }
 }