S3Download/Upload Data integrity protection

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**Tell us about your request**
Adding the support of checksum verification on the S3Download and S3Upload action modules.

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**

The goal is to reduce the risk of supply chain attack cause by automated pipeline building and updating golden image.

**Are you currently working around this issue?**

Implementing a custom checksum verification after the S3Download step.

Start by reviewing the S3Download and S3Upload action modules and the custom checksum verification workaround described in the issue. Clarify the supported checksum inputs and verification behavior with maintainers, then confirm that both actions protect data integrity and handle verification failures.

Written by the indexing model from the issue text.