upgrade to workos-php v4.24.0 (#58)

Author: cmatheson

composer.json

@@ -22,7 +22,7 @@
   ],
   "require": {
     "php": ">=5.6.0",
-    "workos/workos-php": "^v4.14.0"
+    "workos/workos-php": "^v4.24.0"
   },
   "require-dev": {
     "friendsofphp/php-cs-fixer": "^2.15 || ^3.6",