support PHP 8.3

Author: smoench

composer.json

@@ -10,7 +10,7 @@
   ],
   "license": "MIT",
   "require": {
-    "php": "~8.1.0 || ~8.2.0",
+    "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
     "phpunit/phpunit": "^10.2.6"
   },
   "require-dev": {