Update sigstore/cosign-installer action to v3.4.0 (#95)

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

Author: renovate[bot]

.github/workflows/ci-pipeline.yml

@@ -36,7 +36,7 @@ jobs:
       # Install the cosign tool except on PR
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
-        uses: sigstore/cosign-installer@v3.3.0
+        uses: sigstore/cosign-installer@v3.4.0
         with:
           cosign-release: 'v2.1.1'