Find a better way to ensure that the application should be updated correctly

[pipecd-bot]

https://github.com/pipe-cd/pipe/blob/604453f5fee9c264cd9812d963cdb7d2cecaa060/pkg/app/piped/trigger/trigger.go#L314-L317

This was created by todo plugin since "TODO:" was found in https://github.com/pipe-cd/pipe/commit/604453f5fee9c264cd9812d963cdb7d2cecaa060 when #2815 was merged. cc: @khanhtc1202.