Bump actions/checkout from 2 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

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

@@ -17,7 +17,7 @@ jobs:
     container:
       image: perldocker/perl-tester:5.34
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Build Dist
         run: >
           cpan-install-build-deps;
@@ -32,7 +32,7 @@ jobs:
     container:
       image: perldocker/perl-tester:5.34
     steps:
-      - uses: actions/checkout@v2 # codecov wants to be inside a Git repository
+      - uses: actions/checkout@v4 # codecov wants to be inside a Git repository
       - uses: actions/download-artifact@v4
         with:
           name: build_dir
@@ -102,7 +102,7 @@ jobs:
     name: Perl ${{ matrix.perl-version }} on ${{ matrix.os }}
     needs: build
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set Up Perl
         uses: shogo82148/actions-setup-perl@v1
         with:
@@ -144,7 +144,7 @@ jobs:
     name: Perl ${{ matrix.perl-version }} on ${{ matrix.os }}
     needs: build
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set Up Perl
         uses: shogo82148/actions-setup-perl@v1
         with: