build(deps): bump sigstore/cosign-installer from 2.8.1 to 3.0.1

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 2.8.1 to 3.0.1.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](9becc61764...c3667d9942)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/release.yaml

@@ -31,7 +31,7 @@ jobs:
       - name: Setup Syft
         uses: anchore/sbom-action/download-syft@07978da4bdb4faa726e52dfc6b1bed63d4b56479 # v0.13.3
       - name: Setup Cosign
-        uses: sigstore/cosign-installer@9becc617647dfa20ae7b1151972e9b3a2c338a2b # v2.8.1
+        uses: sigstore/cosign-installer@c3667d99424e7e6047999fb6246c0da843953c65 # v3.0.1
       - name: Setup Kustomize
         uses: fluxcd/pkg//actions/kustomize@main
       - name: Login to GitHub Container Registry
@@ -133,7 +133,7 @@ jobs:
           --path="./flux-system" \
           --source=${{ github.repositoryUrl }} \
           --revision="${{ github.ref_name }}@sha1:${{ github.sha }}"
-      - uses: sigstore/cosign-installer@9becc617647dfa20ae7b1151972e9b3a2c338a2b # v2.8.1
+      - uses: sigstore/cosign-installer@c3667d99424e7e6047999fb6246c0da843953c65 # v3.0.1
       - name: Sign manifests
         env:
           COSIGN_EXPERIMENTAL: 1