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

Author: Stephan Wentz

composer.json

@@ -26,7 +26,7 @@
         "brainbits/phpcs-standard": "^8.0",
         "php-coveralls/php-coveralls": "^2.0",
         "phpstan/phpstan-phpunit": "^2.0",
-        "phpunit/phpunit": "^11.0"
+        "phpunit/phpunit": "^12.0"
     },
     "scripts": {
         "check-all": [