chore(deps): bump sigstore/scaffolding from 0.6.16 to 0.6.17 (#9862)

Bumps [sigstore/scaffolding](https://github.com/sigstore/scaffolding) from 0.6.16 to 0.6.17.
- [Release notes](https://github.com/sigstore/scaffolding/releases)
- [Changelog](https://github.com/sigstore/scaffolding/blob/main/release.md)
- [Commits](2d10614e85...a20ae166ad)

---
updated-dependencies:
- dependency-name: sigstore/scaffolding
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/conformance.yaml

@@ -643,7 +643,7 @@ jobs:
         uses: kyverno/action-install-chainsaw@4932dd3a67eedf380e704f5c294851a2f83c638f # v0.1.8
       # create cluster
       - name: Create kind cluster and setup Sigstore Scaffolding
-        uses: sigstore/scaffolding/actions/setup@2d10614e854828e2389881abe6c5cf76240897a7
+        uses: sigstore/scaffolding/actions/setup@a20ae166ad6fe8f7165f4b3ee218acf72d9c45e8
         with:
           version: main
           k8s-version: ${{ matrix.k8s-version.version }}