minor update s3-staging.yml

[ehsanhajian]

Pull Request Summary

Describe what changes this pull request makes to the repository

Check list

• contains breaking changes
• adds new feature
• modifies existing feature (bug fix or improvements)
• relies on other tasks
• documentation changes
• tested on mobile devices

This pull request makes the following changes:

Adds

• (ex: Add feature A)

Fixes

• (ex: Fix validation function)

Changes

• (ex: Change document B)

To-dos

*Feel free to remove this section if it's not applicable

• (ex: add user list)

[github-actions]

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https://astar-apps--pr1062-fix-aws-region2-trzf1b6d.web.app

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