Also allow Carbon version 3 (#3)

Author: benr77

composer.json

@@ -18,7 +18,7 @@
     "minimum-stability": "stable",
     "require": {
         "php": ">8.1",
-        "nesbot/carbon": "^2.38"
+        "nesbot/carbon": "^2.38 || ^3.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.0 || ^9.0",