build(deps): bump slsa-framework/slsa-verifier from 2.6.0 to 2.7.1

Bumps [slsa-framework/slsa-verifier](https://github.com/slsa-framework/slsa-verifier) from 2.6.0 to 2.7.1.
- [Release notes](https://github.com/slsa-framework/slsa-verifier/releases)
- [Changelog](https://github.com/slsa-framework/slsa-verifier/blob/main/RELEASE.md)
- [Commits](slsa-framework/slsa-verifier@v2.6.0...v2.7.1)

---
updated-dependencies:
- dependency-name: slsa-framework/slsa-verifier
  dependency-version: 2.7.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -84,7 +84,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: slsa-framework/slsa-verifier/actions/installer@v2.6.0
+      - uses: slsa-framework/slsa-verifier/actions/installer@v2.7.1
       - name: download assets
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}