chore(deps): Bump the aws group with 1 update (#20229)

Bumps the aws group with 1 update: [aws-smithy-async](https://github.com/smithy-lang/smithy-rs).


Updates `aws-smithy-async` from 1.2.0 to 1.2.1
- [Release notes](https://github.com/smithy-lang/smithy-rs/releases)
- [Changelog](https://github.com/smithy-lang/smithy-rs/blob/main/CHANGELOG.md)
- [Commits](https://github.com/smithy-lang/smithy-rs/commits)

---
updated-dependencies:
- dependency-name: aws-smithy-async
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: aws
...

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