Update dependency phpunit/phpunit to ^10.5.9

| datasource | package         | from   | to     |
| ---------- | --------------- | ------ | ------ |
| packagist  | phpunit/phpunit | 10.5.8 | 10.5.9 |

Author: renovate[bot]

composer.json

@@ -14,7 +14,7 @@
         "php": "~8.2.0 || ~8.3.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^10.5.8",
+        "phpunit/phpunit": "^10.5.9",
         "slam/php-cs-fixer-extensions": "^3.10"
     },
     "autoload": {