Bump actions/attest-build-provenance from 2.3.0 to 2.4.0

Bumps [actions/attest-build-provenance](https://github.com/actions/attest-build-provenance) from 2.3.0 to 2.4.0.
- [Release notes](https://github.com/actions/attest-build-provenance/releases)
- [Changelog](https://github.com/actions/attest-build-provenance/blob/main/RELEASE.md)
- [Commits](actions/attest-build-provenance@db473fd...e8998f9)

---
updated-dependencies:
- dependency-name: actions/attest-build-provenance
  dependency-version: 2.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -70,7 +70,7 @@ jobs:
         upload-release-assets: ${{ runner.os == 'Windows' }}
 
     - name: Attest artifacts
-      uses: actions/attest-build-provenance@db473fddc028af60658334401dc6fa3ffd8669fd # v2.3.0
+      uses: actions/attest-build-provenance@e8998f949152b193b063cb0ec769d69d929409be # v2.4.0
       if: |
         runner.os == 'Windows' &&
         github.event.repository.fork == false &&