Test with PHPUnit 9 & 11

Author: micheh

composer.json

@@ -23,7 +23,7 @@
     },
     "require-dev": {
         "phpstan/phpstan": "^2.0",
-        "phpunit/phpunit": "^8.5.14 || ^9.0",
+        "phpunit/phpunit": "^9.0 || ^11.0",
         "squizlabs/php_codesniffer": "^3.5.0"
     },
     "autoload": {