ci: update docker/setup-buildx-action action to v4 (#322)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release-docker.yaml

@@ -46,7 +46,7 @@ jobs:
             type=ref,event=branch,suffix=-{{ sha }}
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 
       - name: Build Final Docker Image
         uses: docker/build-push-action@v7