chore(deps): update docker/setup-buildx-action digest to 49a04d6

Author: renovate[bot]

.github/workflows/docker-cd.yml

@@ -45,7 +45,7 @@ jobs:
 
       # Workaround: https://github.com/docker/build-push-action/issues/461
       - name: Setup Docker buildx
-        uses: docker/setup-buildx-action@2ad185228a349d19414702819e06df9fa4314287
+        uses: docker/setup-buildx-action@49a04d68900b1d260da9b3f06f52638d56cd8ad1
 
       # Login against a Docker registry except on PR
       # https://github.com/docker/login-action