Todoist node: don't require "Project Name or ID" if "parent id" set

When creating a new task (subtask in this case). You currently have to also set the project name/id of the new task. But technically if you have the ‘optional field’ of ‘Parent Name or ID’ set; you don’t need need a project id, according to the api. It knows where to put it, based on the parent’s task id.