Bump actions/checkout from 4 to 5 (#254)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/update-pr.yml

@@ -18,7 +18,7 @@ jobs:
     steps:
       # report status back to pull request
       - uses: haya14busa/action-workflow_run-status@v1
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: 'Download branch build info'
         uses: dawidd6/action-download-artifact@v11
         with: