Bump sigstore/cosign-installer from 3.0.1 to 3.0.3 (#29)

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.0.1 to 3.0.3.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@v3.0.1...v3.0.3)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  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/release.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
       - uses: docker/setup-buildx-action@4b4e9c3e2d4531116a6f8ba8e71fc6e2cb6e6c8c # v2
-      - uses: sigstore/cosign-installer@v3.0.1
+      - uses: sigstore/cosign-installer@v3.0.3
       - uses: anchore/sbom-action/download-syft@v0.14.2
       - name: ghcr-login
         if: startsWith(github.ref, 'refs/tags/v')