Fix Tutorial docs to work with current s3

[stand-sure]

Is your feature request related to a problem? Please describe.

https://github.com/kanisterio/kanister/blob/master/docs/tutorial.rst uses containerlabs/aws-sdk which is 7 years old and does not support regions and does not support S3v4.

This causes the tutorial examples to fail.

Describe the solution you'd like

Replace image: containerlabs/aws-sdk
With image: amazon/aws-cli

[github-actions]

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[shuguet]

Hello @stand-sure,

Thank you for noticing and reporting this!

Let me update the Deployment spec to reflect that change now, I'll open a PR.