message: fix: mock audience url for unit test
diff: @@ -1452,6 +1452,10 @@ describe('AuthInfo', () => {
  describe('audienceUrl', () => {
  const sfdxAudienceUrlSetting = process.env.SFDX_AUDIENCE_URL;
  + beforeEach(() => {
  + process.env.SFDX_AUDIENCE_URL = '';
  + });
  +
  afterEach(() => {
  process.env.SFDX_AUDIENCE_URL = sfdxAudienceUrlSetting || '';
  });
  