Update docker/setup-buildx-action digest to e468171 (#713)

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

Author: renovate[bot]

.github/workflows/docker-bake.template.yaml

@@ -24,7 +24,7 @@ jobs:
           platforms: 'linux/arm64,linux/amd64'
 
       - name: configure docker buildx
-        uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2 # v3
+        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3
 
       - name: login to docker registry
         uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3