Bump Swatinem/rust-cache from 2.8.2 to 2.9.1 (#102)

Bumps [Swatinem/rust-cache](https://github.com/swatinem/rust-cache) from 2.8.2 to 2.9.1.
- [Release notes](https://github.com/swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md)
- [Commits](Swatinem/rust-cache@v2.8.2...v2.9.1)

---
updated-dependencies:
- dependency-name: Swatinem/rust-cache
  dependency-version: 2.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -24,7 +24,7 @@ jobs:
         toolchain: ${{ matrix.rust }}
 
     - name: Rust Cache
-      uses: Swatinem/rust-cache@v2.8.2
+      uses: Swatinem/rust-cache@v2.9.1
 
     - name: Run tests
       run: cargo test --workspace --no-fail-fast