Merge pull request #59 from marcocesarato/renovate/phpunit-phpunit-9.x

chore(deps): update dependency phpunit/phpunit to v9.6.5

Author: marcocesarato

composer.json

@@ -58,7 +58,7 @@
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.8",
         "brainmaestro/composer-git-hooks": "^2.8",
-        "phpunit/phpunit": "^10.0",
+        "phpunit/phpunit": "^9.6",
         "php-mock/php-mock": "^2.3",
         "php-mock/php-mock-phpunit": "^2.6"
     },