Update docker/setup-buildx-action action to v3.9.0 (#93)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [docker/setup-buildx-action](https://redirect.github.com/docker/setup-buildx-action) | action | minor | `v3.8.0` -> `v3.9.0` |

---

### Release Notes

<details>
<summary>docker/setup-buildx-action (docker/setup-buildx-action)</summary>

### [`v3.9.0`](https://redirect.github.com/docker/setup-buildx-action/compare/v3.8.0...v3.9.0)

[Compare Source](https://redirect.github.com/docker/setup-buildx-action/compare/v3.8.0...v3.9.0)

</details>

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### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

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.github/workflows/docker-publish.yml

@@ -44,7 +44,7 @@ jobs:
       # multi-platform images and export cache
       # https://github.com/docker/setup-buildx-action
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@6524bf65af31da8d45b59e8c27de4bd072b392f5 # v3.8.0
+        uses: docker/setup-buildx-action@f7ce87c1d6bead3e36075b2ce75da1f6cc28aaca # v3.9.0
 
       # Login against a Docker registry except on PR
       # https://github.com/docker/login-action