Update actions versions and Docker setup in workflow

- Updated actions versions for checkout, Python setup, Docker buildx, and Docker login.
- Updated docker/build-push-action version to v6.
- Removed signing step for published Docker image.

.github/workflows/image-make-and-publish.yml

@@ -22,23 +22,19 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set up Python 
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
-          python-version: '3.8'
-
-      - name: Install cosign
-        if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@main
+          python-version: '3.12'
 
       - name: Setup Docker buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v3
 
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@v1
+        uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
@@ -71,7 +67,7 @@ jobs:
 
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v6
         with:
           context: .
           build-args: |
@@ -80,12 +76,6 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
-      - 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 }}
-
       - name: Trigger release job
         if: ${{ success() && github.ref_name == 'main' && github.event_name != 'pull_request' && !github.event.repository.private }}
         uses: toptal/jenkins-job-trigger-action@master