Update sigstore/cosign-installer action to v4.1.2

Author: renovate[bot]

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@v4.1.1
+        uses: sigstore/cosign-installer@v4.1.2
 
       # Workaround: https://github.com/docker/build-push-action/issues/461
       - name: Setup Docker buildx