Add justinrainbow/json-schema 6 support

Author: sidz

composer.json

@@ -11,7 +11,7 @@
     "require": {
         "php": "^8.1",
         "softcreatr/jsonpath": "^0.8",
-        "justinrainbow/json-schema": "^5.0"
+        "justinrainbow/json-schema": "^5.0 || ^6.0"
     },
     "conflict": {
         "phpunit/phpunit": "<8.0 || >= 13.0"