Bump actions/attest-sbom from 1 to 2

Bumps [actions/attest-sbom](https://github.com/actions/attest-sbom) from 1 to 2.
- [Release notes](https://github.com/actions/attest-sbom/releases)
- [Changelog](https://github.com/actions/attest-sbom/blob/main/RELEASE.md)
- [Commits](actions/attest-sbom@v1...v2)

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

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -78,7 +78,7 @@ jobs:
       - uses: actions/download-artifact@v4
         with:
           name: sboms
-      - uses: actions/attest-sbom@v1
+      - uses: actions/attest-sbom@v2
         with:
           subject-path: ${{ matrix.attestation.subject }}
           sbom-path: ${{ matrix.attestation.sbom }}