fix: adding support for symfony 7

Author: Palumbo

composer.json

@@ -56,7 +56,7 @@
     "psr/http-client": "^1.0",
     "psr/http-message": "^1.0 || ^2.0",
     "ramsey/uuid": "^4.0",
-    "symfony/cache": "^3.0 || ^4.0 || ^5.0 || ^6.0"
+    "symfony/cache": "^3.0 || ^4.0 || ^5.0 || ^6.0 || ^7.0"
   },
   "require-dev": {
     "commercetools/php-sdk": "^2.16",