Update docker/setup-buildx-action digest to ecf9528 (#25586)

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

.github/workflows/dockerhub.yaml

@@ -21,7 +21,7 @@ jobs:
               uses: docker/setup-qemu-action@e81a89b1732b9c48d79cd809d8d81d79c4647a18 # v2
 
             - name: Set up Docker Buildx
-              uses: docker/setup-buildx-action@4b4e9c3e2d4531116a6f8ba8e71fc6e2cb6e6c8c # v2
+              uses: docker/setup-buildx-action@ecf95283f03858871ff00b787d79c419715afc34 # v2
               with:
                   install: true