message: fix: get username from accessToken
diff: @@ -76,7 +76,11 @@ async function retrieveUserFields(logger: Logger, username: string): Promise<Use
  });
  if (sfdc.matchesAccessToken(username)) {
  + logger.debug('received an accessToken for the username. Converting...');
  username = (await connection.identity()).username;
  + logger.debug(`accessToken converted to ${username}`);
  + } else {
  + logger.debug('not a accessToken');
  }
  const fromFields = Object.keys(REQUIRED_FIELDS).map(upperFirst);
  