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]>

.github/workflows/changelog.yml

@@ -51,7 +51,7 @@ jobs:
           private_key: ${{ secrets.JENKINS_CHANGELOG_UPDATER_PRIVATE_KEY }}
           repository: jenkins-infra/jenkins.io
       - name: Check out
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Publish jenkins.io changelog draft

.github/workflows/publish-release-artifact.yml

@@ -14,7 +14,7 @@ jobs:
       project-version: ${{ steps.set-version.outputs.project-version }}
       is-lts: ${{ steps.set-version.outputs.is-lts }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with: