Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

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

Author: dependabot[bot]

.github/workflows/publish-to-docker.yml

@@ -15,7 +15,7 @@ jobs:
     name: "Build latest"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Publish to Registry
         uses: elgohr/[email protected]
         with:
@@ -53,7 +53,7 @@ jobs:
           - "5.8"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Publish to Registry
         uses: elgohr/[email protected]
         with:

.github/workflows/test-cpanfile.yml

@@ -34,7 +34,7 @@ jobs:
           - '5.8'
     name: Perl ${{ matrix.perl-version }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install deps using cpm
         uses: perl-actions/install-with-cpm@stable
         with: