chore(deps): update docker/setup-buildx-action action to v2.8.0 (#65)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[docker/setup-buildx-action](https://togithub.com/docker/setup-buildx-action)
| action | minor | `v2.7.0` -> `v2.8.0` |

---

### Release Notes

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

###
[`v2.8.0`](https://togithub.com/docker/setup-buildx-action/releases/tag/v2.8.0)

[Compare
Source](https://togithub.com/docker/setup-buildx-action/compare/v2.7.0...v2.8.0)

- Only set specific flags for drivers supporting them by
[@&#8203;nicks](https://togithub.com/nicks) in
[docker/setup-buildx-action#241
- Bump
[@&#8203;docker/actions-toolkit](https://togithub.com/docker/actions-toolkit)
from 0.5.0 to 0.6.0 in
[docker/setup-buildx-action#242

**Full Changelog**:
docker/setup-buildx-action@v2.7.0...v2.8.0

</details>

---

### Configuration

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

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **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/pr_chezmoi_init.yaml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2.2.0
       - name: Set up docker buildx
-        uses: docker/setup-buildx-action@v2.7.0
+        uses: docker/setup-buildx-action@v2.8.0
       - name: Build docker image
         uses: docker/build-push-action@v4
         with: