post https://public-api.demo.spendesk.com/v1/oauth2/token/refresh
Request new access and refresh tokens. Upon requesting new tokens, both old access_token
and refresh_token
values will be invalidated. New refresh tokens should be requested at least once every 30 days in order to keep the connection alive. If you get a 401 or 403 response, delete the old refresh token and disconnect the user.