Use PHPUnit ^9.5

Author: hlecorche

composer.json

@@ -27,7 +27,7 @@
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.0",
         "phpstan/phpstan": "^1.9",
-        "phpunit/phpunit": "^8.4"
+        "phpunit/phpunit": "^9.5"
     },
     "config": {
         "sort-packages": true