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] <[email protected]>

Author: dependabot[bot]

.github/workflows/perltest.yml

@@ -16,7 +16,7 @@ jobs:
         perl: [ 'latest' ]
     name: Perl ${{ matrix.perl }} on ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up perl
         uses: shogo82148/actions-setup-perl@v1
         with:
@@ -42,7 +42,7 @@ jobs:
     container: davorg/perl-coveralls:latest
     name: Test coverage
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install packages
         run: apt-get update && apt install libexpat1-dev make
       - name: Install modules