Merge pull request #387 from rsksmart/dependabot/github_actions/docker/setup-buildx-action-4.0.0

Bump docker/setup-buildx-action from 3.11.1 to 4.0.0

Author: marcos-iov

.github/workflows/ci.yml

@@ -46,7 +46,7 @@ jobs:
 
       - name: Setup Docker BuildX
         id: setup-buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
         with:
           install: true
           driver-opts: network=host