chore(deps): update docker/setup-buildx-action action to v4 (#145)

| datasource  | package                    | from | to |
| ----------- | -------------------------- | ---- | -- |
| github-tags | docker/setup-buildx-action | v3   | v4 |

Co-authored-by: dreadnode-renovate-bot[bot] <184170622+dreadnode-renovate-bot[bot]@users.noreply.github.com>

Author: dreadnode-renovate-bot[bot]

.github/workflows/docker-build.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
       - name: Login to Docker Hub
         uses: docker/login-action@v4
         with: