Update docker/build-push-action action to v6

Author: renovate[bot]

.github/workflows/build_and_publish.yaml

@@ -47,7 +47,7 @@ jobs:
 
       - run: echo ${{ secrets.GHCR_TOKEN }} | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
 
-      - uses: docker/build-push-action@v2
+      - uses: docker/build-push-action@v6
         with:
           push: true
           tags: ${{ steps.docker_meta.outputs.tags }}