ON UPDATE doesn't trigger on column with TYPEORM/NestJS

Question

When a record is updated in database from TypeORM the date timestamp doesn't get updated.

alter table qae_dashboard.test_suite 
 add column `lastUpdated` DATETIME default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP

NestjS/TypeORM

 return await this.testRepository.update(
    { test_id: existingData.test_id },
    existingData
  );

Please advise.