Update composer.json

New version of php client with fixed type exception for related users + fixed saving of related users

Author: yatsenkolesh

composer.json

@@ -17,7 +17,7 @@
     "require": {
         "php": "^7.4 || ^8.0",
         "laravel/framework": "^5.3 || ^6.0 || ^7.0 || ^8.0 || ^9.0",
-        "abrouter/abrouter-php-client": "^0.16"
+        "abrouter/abrouter-php-client": "^0.18"
     },
     "extra": {
         "laravel": {