chore(deps): update sigstore/cosign-installer action to v4 (#111)

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.yaml

@@ -36,14 +36,14 @@ jobs:
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-go-
-      - uses: sigstore/cosign-installer@398d4b0eeef1380460a10c8013a76f728fb906ac # v3.9.1
+      - uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
       - uses: anchore/sbom-action/download-syft@9246b90769f852b3a8921f330c59e0b3f439d6e9 # v0.20.1
 
       - name: Set Up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
       - name: Set up Cosign
-        uses: sigstore/cosign-installer@v3.9.1
+        uses: sigstore/cosign-installer@v4.0.0
 
       - name: Login to Registry
         uses: docker/login-action@v3