Bump actions/attest-build-provenance from 3.1.0 to 3.2.0 (#2499)

Bumps [actions/attest-build-provenance](https://github.com/actions/attest-build-provenance) from 3.1.0 to 3.2.0.
- [Release notes](https://github.com/actions/attest-build-provenance/releases)
- [Changelog](https://github.com/actions/attest-build-provenance/blob/main/RELEASE.md)
- [Commits](https://github.com/actions/attest-build-provenance/compare/v3.1.0...v3.2.0)

---
updated-dependencies:
- dependency-name: actions/attest-build-provenance
  dependency-version: 3.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/publish-image.yml

@@ -101,7 +101,7 @@ jobs:
 
       - name: Attest image provenance (per-arch)
         if: github.event_name != 'pull_request'
-        uses: actions/attest-build-provenance@v3.1.0
+        uses: actions/attest-build-provenance@v3.2.0
         with:
           subject-name: ${{ steps.vars.outputs.canonical }}
           subject-digest: ${{ steps.build.outputs.digest }}