changes for aws-sdk-go-v2

[rkurduka]

Issue #, if available:

Description of changes:

Changes are require to migrate code-generator from AWS SDK GO V1 to V2

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

[ack-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: rkurduka
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[ack-prow]

@rkurduka: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
verify-attribution	9360e56	link	false	/test verify-attribution
s3-olm-test	9360e56	link	false	/test s3-olm-test
unit-test	9360e56	link	true	/test unit-test
acm-controller-test	9360e56	link	true	/test acm-controller-test
eventbridge-controller-test	9360e56	link	true	/test eventbridge-controller-test
apigatewayv2-controller-test	9360e56	link	true	/test apigatewayv2-controller-test
dynamodb-controller-test	9360e56	link	true	/test dynamodb-controller-test
efs-controller-test	9360e56	link	true	/test efs-controller-test
prometheusservice-controller-test	9360e56	link	true	/test prometheusservice-controller-test
s3-controller-test	9360e56	link	true	/test s3-controller-test
cloudfront-controller-test	9360e56	link	true	/test cloudfront-controller-test
lambda-controller-test	9360e56	link	true	/test lambda-controller-test
pipes-controller-test	9360e56	link	true	/test pipes-controller-test
ec2-controller-test	9360e56	link	true	/test ec2-controller-test
eks-controller-test	9360e56	link	true	/test eks-controller-test
iam-controller-test	9360e56	link	true	/test iam-controller-test
ecr-controller-test	9360e56	link	true	/test ecr-controller-test
documentdb-controller-test	9360e56	link	true	/test documentdb-controller-test

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