validateUpdate(authData, options, req) {
    return Promise.resolve({});
  }
Triggered when user provide authData related to this provider
the user is logged in and has already set this provider before
@param {Object} authData The client provided authData
@param {Object} options additional adapter options
@param {Parse.Cloud.TriggerRequest} request
@returns {Promise<ParseAuthResponse|void|undefined>}