chore(deps): bump sigstore/cosign-installer from 3.8.0 to 3.8.1 (#3)

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.8.0 to 3.8.1.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@v3.8.0...v3.8.1)

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

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

Author: dependabot[bot]

.github/workflows/build-devbox.yml

@@ -101,7 +101,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.8.0
+      - uses: sigstore/cosign-installer@v3.8.1
 
       - name: Sign container image
         if: github.event_name != 'pull_request'