message: fix: fix child logger unit test
diff: @@ -161,8 +161,8 @@ describe('Logger', () => {
  it('should log uncaught exception in root logger', async () => {
  process.env.SFDX_ENV = 'dev';
  - $$.SANDBOX.stub(Logger.prototype, 'fatal');
  const rootLogger = await Logger.root();
  + $$.SANDBOX.stub(rootLogger, 'fatal');
  // @ts-ignore
  Logger.lifecycle.emit('uncaughtException', 'testException');
  @@ -181,13 +181,13 @@ describe('Logger', () => {
  it('should not log uncaught exception in child logger', async () => {
  process.env.SFDX_ENV = 'dev';
  - $$.SANDBOX.stub(Logger.prototype, 'fatal');
  const childLoggerName = 'myChildLogger';
  const childLogger = await Logger.child(childLoggerName);
  + $$.SANDBOX.stub(childLogger, 'fatal');
  // @ts-ignore
  Logger.lifecycle.emit('uncaughtException', 'testException');
  - expect(childLogger.fatal['called']).to.be.true;
  + expect(childLogger.fatal['called']).to.be.false;
  });
  });
  