Support PHP8.3

Author: jerowork

.github/workflows/test.yaml

@@ -11,7 +11,7 @@ jobs:
     name: Test
     strategy:
       matrix:
-        php-version: ['8.4']
+        php-version: ['8.3', '8.4']
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code

README.md

@@ -1,6 +1,6 @@
 # GraphQL Attribute Schema
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat)](LICENSE)
-[![PHP Version](https://img.shields.io/badge/php-%5E8.4-8892BF.svg?style=flat)](http://www.php.net)
+[![PHP Version](https://img.shields.io/badge/php-%5E8.3-8892BF.svg?style=flat)](http://www.php.net)
 
 Build your GraphQL Schema (for [webonyx/graphql-php](https://github.com/webonyx/graphql-php)) based on attributes.
 

docs/index.md

@@ -1,6 +1,6 @@
 # GraphQL Attribute Schema
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat)](LICENSE)
-[![PHP Version](https://img.shields.io/badge/php-%5E8.4-8892BF.svg?style=flat)](http://www.php.net)
+[![PHP Version](https://img.shields.io/badge/php-%5E8.3-8892BF.svg?style=flat)](http://www.php.net)
 
 Build your GraphQL Schema (for [webonyx/graphql-php](https://github.com/webonyx/graphql-php)) based on attributes.