Bump sigstore/cosign-installer from 2.4.0 to 2.4.1 (#25)

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 2.4.0 to 2.4.1.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@7e0881f...48866aa)

---
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>

.github/workflows/docker-publish.yml

@@ -33,7 +33,7 @@ jobs:
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@7e0881f8fe90b25e305bbf0309761e9314607e25
+        uses: sigstore/cosign-installer@48866aa521d8bf870604709cd43ec2f602d03ff2
         with:
           cosign-release: "v1.9.0"