Update docker/setup-buildx-action digest to 6524bf6 (#28895)

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

Author: renovate[bot]

.github/workflows/dockerhub.yaml

@@ -27,7 +27,7 @@ jobs:
               uses: docker/setup-qemu-action@49b3bc8e6bdd4a60e6116a5414239cba5943d3cf # v3
 
             - name: Set up Docker Buildx
-              uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349 # v3
+              uses: docker/setup-buildx-action@6524bf65af31da8d45b59e8c27de4bd072b392f5 # v3
               with:
                   install: true