Update php-enum dependency version to ^4.4 (#854)

Author: emodric

CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Changed
+- Restricted `mark-mabe/php-enum` dependency to `^4.4` due to lower versions emitting a warning on PHP 8 ([#854](https://github.com/jsonrainbow/json-schema/pull/854))
 
 ## [6.6.2] - 2025-11-28
 ### Changed

composer.json

@@ -29,7 +29,7 @@
     "require": {
         "php": "^7.2 || ^8.0",
         "ext-json": "*",
-        "marc-mabe/php-enum":"^4.0"
+        "marc-mabe/php-enum":"^4.4"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "3.3.0",