Update actions/upload-pages-artifact action to v4 (#645)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[actions/upload-pages-artifact](https://redirect.github.com/actions/upload-pages-artifact)
| action | major | `v3.0.1` -> `v4.0.0` |

---

### Release Notes

<details>
<summary>actions/upload-pages-artifact
(actions/upload-pages-artifact)</summary>

###
[`v4.0.0`](https://redirect.github.com/actions/upload-pages-artifact/releases/tag/v4.0.0)

[Compare
Source](https://redirect.github.com/actions/upload-pages-artifact/compare/v3.0.1...v4.0.0)

#### What's Changed

- Potentially breaking change: hidden files (specifically dotfiles) will
not be included in the artifact by
[@&#8203;tsusdere](https://redirect.github.com/tsusdere) in
[https://github.com/actions/upload-pages-artifact/pull/102](https://redirect.github.com/actions/upload-pages-artifact/pull/102)
If you need to include dotfiles in your artifact: instead of using this
action, create your own artifact according to these requirements
https://github.com/actions/upload-pages-artifact?tab=readme-ov-file#artifact-validation
- Pin `actions/upload-artifact` to SHA by
[@&#8203;heavymachinery](https://redirect.github.com/heavymachinery) in
[https://github.com/actions/upload-pages-artifact/pull/127](https://redirect.github.com/actions/upload-pages-artifact/pull/127)

**Full Changelog**:
actions/upload-pages-artifact@v3.0.1...v4.0.0

</details>

---

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---

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---

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.github/workflows/deploy-doc.yml

@@ -28,7 +28,7 @@ jobs:
         run: bundle exec yard doc
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3.0.1
+        uses: actions/upload-pages-artifact@7b1f4a764d45c48632c6b24a0339c27f5614fb0b # v4.0.0
         with:
           path: doc