Bump sigstore/cosign-installer from 3.5.0 to 3.6.0

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.5.0 to 3.6.0.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@59acb62...4959ce0)

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

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

.github/workflows/release-cni-plugin.yml

@@ -66,7 +66,7 @@ jobs:
                   --platform linux/amd64,linux/arm64,linux/arm/v7 \
                   --output type=registry
       - if: needs.meta.outputs.mode == 'release'
-        uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20
+        uses: sigstore/cosign-installer@4959ce089c160fddf62f7b42464195ba1a56d382
       - if: needs.meta.outputs.mode == 'release'
         run: cosign sign -y "${{ needs.meta.outputs.repo }}:${{ needs.meta.outputs.version }}"
         env:

.github/workflows/release-proxy-init.yml

@@ -66,7 +66,7 @@ jobs:
                   --platform linux/amd64,linux/arm64,linux/arm/v7 \
                   --output type=registry
       - if: needs.meta.outputs.mode == 'release'
-        uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20
+        uses: sigstore/cosign-installer@4959ce089c160fddf62f7b42464195ba1a56d382
       - if: needs.meta.outputs.mode == 'release'
         run: cosign sign -y "${{ needs.meta.outputs.repo }}:${{ needs.meta.outputs.version }}"
         env: