Bump actions/checkout from 4 to 5

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>

.github/workflows/verify.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-24.04
     environment: production
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: gacts/install-hurl@v1
       - run: hurl --test --report-tap verification.tap test/prod.hurl
         env: