update php to version 8.1

Author: transistive

composer.json

@@ -21,7 +21,7 @@
         }
     ],
     "require": {
-        "php": "^8.0",
+        "php": "^8.1",
         "laudis/typed-enum": "^1.3.2",
         "php-http/discovery": "^1.13",
         "psr/http-message": "^1.0|^2.0",