build(deps): bump async-trait from 0.1.89 to 0.1.91

Bumps [async-trait](https://github.com/dtolnay/async-trait) from 0.1.89 to 0.1.91.
- [Release notes](https://github.com/dtolnay/async-trait/releases)
- [Commits](dtolnay/async-trait@0.1.89...0.1.91)

---
updated-dependencies:
- dependency-name: async-trait
  dependency-version: 0.1.91
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]