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] <[email protected]>

Author: dependabot[bot]

.github/workflows/checks.yaml

@@ -148,7 +148,7 @@ jobs:
           components: clippy
           targets: ${{matrix.target}}
       - name: Rust cache
-        uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0
+        uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1
         with:
             shared-key: "stable-${{matrix.target}}"