migrate to AWS SDK for Go version 2

## Enhancement

AWS SDK for Go version 2 offers significant performance improvements in CPU and memory utilization over version 1

```
We are excited to announce the General Availability (GA) release of the [AWS SDK for Go version 2 (v2).](https://github.com/aws/aws-sdk-go-v2/releases) This release follows the [Release candidate](https://aws.amazon.com/blogs/developer/aws-sdk-for-go-version-2-v2-release-candidate/) of the AWS SDK for Go v2. Version 2 incorporates customer feedback from version 1 and takes advantage of modern Go language features.

The AWS SDK for Go v2 requires Go 1.15 or higher, and offers significant performance improvements in CPU and memory utilization over version 1. Review our [Developer Guide](https://aws.github.io/aws-sdk-go-v2/docs/) to get started with AWS SDK for Go v2 or review the [migration guide](https://aws.github.io/aws-sdk-go-v2/docs/migrating/) if you already use version 1.

```