Renovate: actions/deploy-pages to v4 (#233)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/deploy-pages](https://togithub.com/actions/deploy-pages) |
action | major | `v3` -> `v4` |

---

### Release Notes

<details>
<summary>actions/deploy-pages (actions/deploy-pages)</summary>

### [`v4`](https://togithub.com/actions/deploy-pages/compare/v3...v4)

[Compare
Source](https://togithub.com/actions/deploy-pages/compare/v3...v4)

</details>

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.github/workflows/pages.yml

@@ -67,4 +67,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v3
+        uses: actions/deploy-pages@v4