build(deps): bump actions/attest from 4.2.0 to 4.2.1 (#6028)

Bumps [actions/attest](https://github.com/actions/attest) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/actions/attest/releases)
- [Changelog](https://github.com/actions/attest/blob/main/RELEASE.md)
- [Commits](https://github.com/actions/attest/compare/v4.2.0...v4.2.1)

---
updated-dependencies:
- dependency-name: actions/attest
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/release.yml

@@ -24,7 +24,7 @@ jobs:
 
       - run: cd binaries && sha256sum -b * > checksums.sha256
 
-      - uses: actions/attest@v4.2.0
+      - uses: actions/attest@v4.2.1
         with:
           subject-path: "${{ github.workspace }}/binaries/*"