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](actions/checkout@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>

Author: dependabot[bot]

.github/workflows/dzil-build-and-test.yml

@@ -17,7 +17,7 @@ jobs:
     container:
       image: perldocker/perl-tester:5.38
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Run Tests
         env:
           AUTHOR_TESTING: 1
@@ -35,7 +35,7 @@ jobs:
     container:
       image: perldocker/perl-tester:5.38
     steps:
-      - uses: actions/checkout@v4 # codecov wants to be inside a Git repository
+      - uses: actions/checkout@v5 # codecov wants to be inside a Git repository
       - uses: actions/download-artifact@v5
         with:
           name: build_dir