Bump aws-sdk from 2.820.0 to 2.821.0 (#752)
Bump aws-sdk from 2.820.0 to 2.821.0 (#752)

Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.820.0 to 2.821.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Changelog](https://github.com/aws/aws-sdk-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-js/compare/v2.820.0...v2.821.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
kpfefferle/ember-cli-deploy-cloudfront