[extension/awsproxy] migrate to AWS v2 SDK

[crobert-1]

Component(s)

No response

Describe the issue you're reporting

As referenced, the extension/awsproxy component is still depending on v1 of the AWS SDK.

[github-actions]

Pinging code owners:

• extension/awsproxy: @Aneurysm9 @mxiamxia

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[hostejulien]

Hi, I'd like to work on this issue. Could you please assign it to me? Thanks!

[pjanotti]

Hi @hostejulien - I assigned the issue to you.