Bump docker/setup-buildx-action from 3 to 4 (#817)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/cd.yml

@@ -32,7 +32,7 @@ jobs:
         uses: docker/setup-qemu-action@v4
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 
       # Login against a Docker registry
       # https://github.com/docker/login-action