chore(deps): update sigstore/cosign-installer action to v4

Author: renovate[bot]

.github/workflows/release.yml

@@ -71,7 +71,7 @@ jobs:
             ./cmd/server
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@7e8b541eb2e61bf99390e1afd4be13a184e9ebc5 # v3.10.1
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
 
       - name: Sign Image with Cosign
         env: