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] <[email protected]>

.github/workflows/build-multiarch.yml

@@ -49,7 +49,7 @@ jobs:
     steps:
       - name: Install cosign
         if: ${{ inputs.sign == true && github.event.release && github.event.action == 'published' }}
-        uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20 #v3.5.0
+        uses: sigstore/cosign-installer@4959ce089c160fddf62f7b42464195ba1a56d382 #v3.6.0
         with:
           cosign-release: 'v2.2.4'