chore(deps): update actions/setup-node action to v5 (#14)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/setup-node](https://github.com/actions/setup-node) | action | major | `v4` -> `v5` |

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### Release Notes

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

### [`v5`](https://github.com/actions/setup-node/compare/v4...v5)

[Compare Source](https://github.com/actions/setup-node/compare/v4...v5)

</details>

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### Configuration

📅 **Schedule**: Branch creation - "every weekend" (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.

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

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This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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Reviewed-on: #14
Co-authored-by: Renovate Bot <renovatebot@schulze.network>
Co-committed-by: Renovate Bot <renovatebot@schulze.network>

.gitea/workflows/lint.yml

@@ -19,7 +19,7 @@ jobs:
         uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4
 
       - name: Setup Node.js
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5
         with:
           node-version: 22
           cache: "pnpm"