Allow newer PHP versions than currently existing + badge in README

Author: cracksalad

README.md

@@ -1,6 +1,7 @@
 # JSON Schema Validator
 
 [![License](http://poser.pugx.org/nerou/json-schema-validator/license)](https://packagist.org/packages/nerou/json-schema-validator)
+[![PHP Version Require](http://poser.pugx.org/nerou/json-schema-validator/require/php)](https://packagist.org/packages/nerou/json-schema-validator)
 [![Version](http://poser.pugx.org/nerou/json-schema-validator/version)](https://packagist.org/packages/nerou/json-schema-validator)
 [![Psalm Type Coverage](https://shepherd.dev/github/nerou42/JSONSchemaValidator/coverage.svg)](https://packagist.org/packages/nerou/json-schema-validator)
 

composer.json

@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": ">=8.0 <8.4",
+        "php": ">=8.0",
         "ext-json": "*",
         "opis/json-schema": "^2.3",
         "nerou/cli-parser": "^0.1.0"