chore(deps): Bump slsa-framework/slsa-verifier in the actions group

Bumps the actions group with 1 update: [slsa-framework/slsa-verifier](https://github.com/slsa-framework/slsa-verifier).


Updates `slsa-framework/slsa-verifier` from 2.5.1 to 2.6.0
- [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@v2.5.1...v2.6.0)

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

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

.github/workflows/release.yaml

@@ -64,7 +64,7 @@ jobs:
     permissions: read-all
     steps:
       - name: Install the verifier
-        uses: slsa-framework/slsa-verifier/actions/installer@v2.5.1
+        uses: slsa-framework/slsa-verifier/actions/installer@v2.6.0
 
       - name: Download assets
         env: