chore(deps): bump sigstore/cosign-installer from 3.10.0 to 4.0.0 (#5642)

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.10.0 to 4.0.0.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@v3.10.0...v4.0.0)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release.yaml

@@ -256,7 +256,7 @@ jobs:
         TAG="$(curl --silent "https://api.github.com/repos/replicatedhq/kots/releases/latest" | grep -Po '"tag_name": "\K.*?(?=")')"
         export TAG
         echo "GORELEASER_PREVIOUS_TAG=${TAG}" >> "$GITHUB_ENV"
-    - uses: sigstore/cosign-installer@v3.10.0
+    - uses: sigstore/cosign-installer@v4.0.0
     - name: Get Cosign Key
       run: |
         echo "$COSIGN_KEY" | base64 -d > ./cosign.key