Fix jane-php/json-schema dependency

Author: Korbeil

composer.json

@@ -27,7 +27,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.3.2",
-        "jane-php/json-schema": "dev-next@dev",
+        "jane-php/json-schema": "^7.4",
         "jane-php/json-schema-runtime": "^7.4",
         "phpstan/phpstan": "^1.9",
         "symfony/browser-kit": "^5.4 || ^6.0",