Bump async-channel from 2.1.0 to 2.1.1

Bumps [async-channel](https://github.com/smol-rs/async-channel) from 2.1.0 to 2.1.1.
- [Release notes](https://github.com/smol-rs/async-channel/releases)
- [Changelog](https://github.com/smol-rs/async-channel/blob/master/CHANGELOG.md)
- [Commits](smol-rs/async-channel@v2.1.0...v2.1.1)

---
updated-dependencies:
- dependency-name: async-channel
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>