feat(s3-deployment): switch CDKBucketDeployment Lambda architecture to ARM_64

[eruvanos]

Issue # (if applicable)

Closes #29996

Reason for this change

Reduce costs for s3 bucket deployments.

Description of changes

Change LambdaFunction architecture

Description of how you validated changes

Run tests

Checklist

• [x] My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license