Update aws sdk go to support new partiton

[kmala]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:

• update the aws sdk go dependency inorder to support new partition (iso-e &iso-f) aws/aws-sdk-go@6d6fb86.
• cherry pick [release-1.23] Pin kops version to 1.28 #707 to fix e2e test

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

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[kmala]

/test pull-cloud-provider-aws-e2e

[hakman]

/retest

[kmala]

/test pull-cloud-provider-aws-e2e

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hakman

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