update for php8.4

Author: doyouhaobaby

composer.json

@@ -23,7 +23,7 @@
         "gettext/gettext": "^5.5.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^10",
+        "phpunit/phpunit": "^9",
         "squizlabs/php_codesniffer": "^3.0",
         "oscarotero/php-cs-fixer-config": "^2",
         "friendsofphp/php-cs-fixer": "^3"