Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.21.1 to 1.21.2.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Changelog](https://github.com/aws/aws-sdk-go/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-go/compare/v1.21.1...v1.21.2)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>