build(deps): bump bnjbvr/cargo-machete from 0.8.0 to 0.9.1

Bumps [bnjbvr/cargo-machete](https://github.com/bnjbvr/cargo-machete) from 0.8.0 to 0.9.1.
- [Release notes](https://github.com/bnjbvr/cargo-machete/releases)
- [Changelog](https://github.com/bnjbvr/cargo-machete/blob/main/CHANGELOG.md)
- [Commits](bnjbvr/cargo-machete@v0.8.0...v0.9.1)

---
updated-dependencies:
- dependency-name: bnjbvr/cargo-machete
  dependency-version: 0.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -51,7 +51,7 @@ jobs:
           RUSTDOCFLAGS: -Dwarnings
 
       - name: check unused dependencies
-        uses: bnjbvr/cargo-machete@v0.8.0
+        uses: bnjbvr/cargo-machete@v0.9.1
         env:
           RUSTUP_TOOLCHAIN: "stable"