Bump github.com/aws/smithy-go from 1.23.1 to 1.23.2 in /tools/clean (#2888)

Bumps [github.com/aws/smithy-go](https://github.com/aws/smithy-go) from 1.23.1 to 1.23.2.
- [Release notes](https://github.com/aws/smithy-go/releases)
- [Changelog](https://github.com/aws/smithy-go/blob/main/CHANGELOG.md)
- [Commits](aws/smithy-go@v1.23.1...v1.23.2)

---
updated-dependencies:
- dependency-name: github.com/aws/smithy-go
  dependency-version: 1.23.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]