Bump Swatinem/rust-cache from 2.8.0 to 2.8.1

Bumps [Swatinem/rust-cache](https://github.com/swatinem/rust-cache) from 2.8.0 to 2.8.1.
- [Release notes](https://github.com/swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md)
- [Commits](Swatinem/rust-cache@98c8021...f13886b)

---
updated-dependencies:
- dependency-name: Swatinem/rust-cache
  dependency-version: 2.8.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

action.yml

@@ -227,7 +227,7 @@ runs:
 
     - name: Setup Rust Caching
       if: inputs.cache == 'true'
-      uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       with:
         workspaces: ${{ inputs.cache-workspaces || inputs.rust-src-dir }}
         cache-directories: ${{inputs.cache-directories}}