Changes to GET /activity/latest-messages

removed the success response with the status 200

deleted the query request parameter limit

deleted the query request parameter subscribe

the endpoint scheme security traqOAuth2 was removed from the API

endpoint deprecated

added the non-success response with the status 410

removed the non-success response with the status 400

api operation id getActivities was added

the endpoint scheme security traqOAuth2 was added to the API