build(deps): bump sigstore/cosign-installer from 3.8.0 to 3.8.1

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@c56c2d3...d7d6bc7)

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

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

Author: dependabot[bot]

.github/workflows/release.yaml

@@ -26,7 +26,7 @@ jobs:
         with:
           go-version: "${{ steps.gover.outputs.goversion }}"
       - name: Set up Cosign
-        uses: sigstore/cosign-installer@c56c2d3e59e4281cc41dea2217323ba5694b171e # tag=v3.8.0
+        uses: sigstore/cosign-installer@d7d6bc7722e3daa8354c50bcb52f4837da5e9b6a # tag=v3.8.1
       - uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # tag=v3.3.0
         with:
           registry: ghcr.io