Bump Swatinem/rust-cache from 2.6.0 to 2.6.1 in /.github/actions/cache (#9407)

Bumps [Swatinem/rust-cache](https://github.com/swatinem/rust-cache) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md)
- [Commits](Swatinem/rust-cache@b8a6852...578b235)

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

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

Author: dependabot[bot]

.github/actions/cache/action.yml

@@ -15,7 +15,7 @@ runs:
       id: normalized-key
       run: echo "key=$(echo "${{ inputs.key }}" | tr -d ',')" >> $GITHUB_OUTPUT
       shell: bash
-    - uses: Swatinem/rust-cache@b8a6852b4f997182bdea832df3f9e153038b5191  # v2.6.0
+    - uses: Swatinem/rust-cache@578b235f6e5f613f7727f1c17bd3305b4d4d4e1f  # v2.6.1
       with:
         key: ${{ steps.normalized-key.outputs.key }}
         workspaces: "./src/rust/ -> target"