add core_course_category

trigger/categories/lib.php

@@ -27,6 +27,7 @@ use coursecat;
 use tool_lifecycle\local\manager\settings_manager;
 use tool_lifecycle\local\response\trigger_response;
 use tool_lifecycle\settings_type;
+use core_course_category;
 
 defined('MOODLE_INTERNAL') || die();
 require_once(__DIR__ . '/../lib.php');