update workflow actions

.github/workflows/docker-publish.yml

@@ -23,7 +23,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Extract Rack image version
         run: |
@@ -33,12 +33,10 @@ jobs:
         run: |
           echo "RACK_SDK_VERSION=$(/bin/egrep -i '^RACK_SDK_VERSION.*:=' Makefile | cut -d ' ' -f 3)" >> $GITHUB_ENV
 
-      - name: Install cosign
-        if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@v2
-
       - name: Setup Docker buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
+        with:
+          driver: docker-container
 
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'
@@ -50,7 +48,7 @@ jobs:
 
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@v4
+        uses: docker/metadata-action@v5
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
@@ -61,17 +59,11 @@ jobs:
 
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v5
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-
-      - name: Sign the published Docker image
-        if: ${{ github.event_name != 'pull_request' && !github.event.repository.private }}
-        env:
-          COSIGN_EXPERIMENTAL: "true"
-        run: cosign sign ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build-and-push.outputs.digest }}