Update docker-publish.yml

again updated cosign in the workflow, since the previous comit didn'T work (this time following https://github.com/marketplace/actions/cosign-installer)

.github/workflows/docker-publish.yml

@@ -52,12 +52,10 @@ jobs:
 
       # Install the cosign tool except on PR
       # https://github.com/sigstore/cosign-installer
-      - name: Install cosign
+      - name: cosign-installer
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 #v3.1.1
-        with:
-          cosign-release: 'v2.3.1'
-
+        uses: sigstore/[email protected]
+
       # Set up BuildKit Docker container builder to be able to build
       # multi-platform images and export cache
       # https://github.com/docker/setup-buildx-action