Update sigstore/cosign-installer action to v4 (#1181)

| datasource  | package                   | from    | to     |
| ----------- | ------------------------- | ------- | ------ |
| github-tags | sigstore/cosign-installer | v3.10.0 | v4.0.0 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release.yml

@@ -215,7 +215,7 @@ jobs:
         uses: anchore/sbom-action/download-syft@f8bdd1d8ac5e901a77a92f111440fdb1b593736b # v0.20.6
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
 
       - name: Install Nix
         uses: cachix/install-nix-action@9280e7aca88deada44c930f1e2c78e21c3ae3edd # v31