Update docker/setup-buildx-action action to v4 (#335)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/publish.yaml

@@ -50,7 +50,7 @@ jobs:
       - run: echo ${{ secrets.GHCR_TOKEN }} | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
 
       - uses: docker/setup-qemu-action@v4
-      - uses: docker/setup-buildx-action@v3
+      - uses: docker/setup-buildx-action@v4
       - uses: docker/build-push-action@v6
         with:
           push: true