Update dessant/lock-threads action to v5 (#661)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [dessant/lock-threads](https://togithub.com/dessant/lock-threads) | action | major | `v4` -> `v5` |

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### Release Notes

<details>
<summary>dessant/lock-threads (dessant/lock-threads)</summary>

### [`v5`](https://togithub.com/dessant/lock-threads/compare/v4...v5)

[Compare Source](https://togithub.com/dessant/lock-threads/compare/v4...v5)

</details>

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### 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 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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 - [ ] If you want to rebase/retry this PR, check this box

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.github/workflows/issue_lock.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'vercel'
     steps:
-      - uses: dessant/lock-threads@v4
+      - uses: dessant/lock-threads@v5
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           add-issue-labels: 'locked'