Changes to POST `/api/v0/course-material/course-modules/chatbot/:chatbot_configuration_id/conversations/new` Sends a new chat message to the chatbot.

added the optional property conversation_title to the response with the 200 status

the response property user_id became nullable for the status 200

the response property user_id became optional for the status 200

added the optional property anonymous_token to the response with the 200 status

the response property course_id became nullable for the status 200

the response property course_id became optional for the status 200