Bump the ci group with 1 update

Bumps the ci group with 1 update: [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer).

- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@11086d2...1fc5bd3)

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

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

.github/workflows/controller_release.yaml

@@ -94,7 +94,7 @@ jobs:
           platforms: linux/amd64,linux/arm/v7,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-      - uses: sigstore/cosign-installer@11086d25041f77fe8fe7b9ea4e48e3b9192b8f19 # v3.1.2
+      - uses: sigstore/cosign-installer@1fc5bd396d372bee37d608f955b336615edf79c8 # v3.2.0
       - name: Sign images
         env:
           COSIGN_EXPERIMENTAL: 1

.github/workflows/release_v21.yaml

@@ -237,7 +237,7 @@ jobs:
       - name: Setup Syft
         uses: anchore/sbom-action/download-syft@78fc58e266e87a38d4194b2137a3d4e9bcaf7ca1 # v0.14.3
       - name: Setup Cosign
-        uses: sigstore/cosign-installer@11086d25041f77fe8fe7b9ea4e48e3b9192b8f19 # v3.1.2
+        uses: sigstore/cosign-installer@1fc5bd396d372bee37d608f955b336615edf79c8 # v3.2.0
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v1
         with:
@@ -409,7 +409,7 @@ jobs:
           --path="./flux-system" \
           --source=${{ github.repositoryUrl }} \
           --revision="${{ github.ref_name }}@sha1:${{ github.sha }}"
-      - uses: sigstore/cosign-installer@11086d25041f77fe8fe7b9ea4e48e3b9192b8f19 # v3.1.2
+      - uses: sigstore/cosign-installer@1fc5bd396d372bee37d608f955b336615edf79c8 # v3.2.0
       - name: Sign manifests
         env:
           COSIGN_EXPERIMENTAL: 1