Fix: return type deprecation warnings in underlying facebook dependency

facebook/facebook-php-business-sdk@049dfd1

Author: jordyvanderhaegen

composer.json

@@ -18,7 +18,7 @@
     ],
     "require": {
         "php": "^8.0",
-        "facebook/php-business-sdk": "^12.0",
+        "facebook/php-business-sdk": "^15.0",
         "illuminate/http": "^8.0|^9.0",
         "illuminate/support": "^8.0|^9.0"
     },