Update docker/setup-buildx-action action to v3.8.0

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -51,7 +51,7 @@ jobs:
       # multi-platform images and export cache
       # https://github.com/docker/setup-buildx-action
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@988b5a0280414f521da01fcc63a27aeeb4b104db # v3.6.1
+        uses: docker/setup-buildx-action@6524bf65af31da8d45b59e8c27de4bd072b392f5 # v3.8.0
 
       # Login against a Docker registry except on PR
       # https://github.com/docker/login-action