build(deps): bump sigstore/cosign-installer from 3.1.0 to 3.1.1

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](https://github.com/sigstore/cosign-installer/compare/d13028333d784fcc802b67ec924bcebe75aa0a5f...6e04d228eb30da1757ee4e1dd75a0ec73a653e06)

---
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>

.github/workflows/release.yaml

@@ -36,7 +36,7 @@ jobs:
       - name: Setup Syft
         uses: anchore/sbom-action/download-syft@78fc58e266e87a38d4194b2137a3d4e9bcaf7ca1 # v0.14.3
       - name: Setup Cosign
-        uses: sigstore/cosign-installer@d13028333d784fcc802b67ec924bcebe75aa0a5f # v3.1.0
+        uses: sigstore/cosign-installer@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 # v3.1.1
       - name: Setup Kustomize
         uses: fluxcd/pkg/actions/kustomize@main
       - name: Login to GitHub Container Registry
@@ -155,7 +155,7 @@ jobs:
           --path="./flux-system" \
           --source=${{ github.repositoryUrl }} \
           --revision="${{ github.ref_name }}@sha1:${{ github.sha }}"
-      - uses: sigstore/cosign-installer@d13028333d784fcc802b67ec924bcebe75aa0a5f # v3.1.0
+      - uses: sigstore/cosign-installer@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 # v3.1.1
       - name: Sign manifests
         env:
           COSIGN_EXPERIMENTAL: 1