composer: re-add php 8.3

Author: hydrapolic

composer.json

@@ -23,7 +23,7 @@
         "issues": "https://github.com/pauci/datetime/issues"
     },
     "require": {
-        "php": "^8.4 || ^8.5",
+        "php": "^8.3 || ^8.4 || ^8.5",
         "ext-json": "*",
         "psr/clock": "^1.0"
     },