chore(deps): Update actions/setup-node action to v4 (#29)

This PR contains the following updates:

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

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### Release Notes

<details>
<summary>actions/setup-node (actions/setup-node)</summary>

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

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

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), Automerge - At any time (no schedule defined).

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

♻ **Rebasing**: Whenever PR becomes conflicted, 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

---

This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate).
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Author: cq-bot

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version: "16"
           registry-url: "https://registry.npmjs.org"

.github/workflows/regen.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           cache: "npm"
           node-version: "16"