chore(ci): 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/ci.yml

@@ -39,7 +39,7 @@ jobs:
       matrix:
         java_version: ${{ fromJson(inputs.java_test_versions) }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ts-graphviz/setup-graphviz@v1
       - uses: actions/setup-java@v3
         with:
@@ -54,7 +54,7 @@ jobs:
     needs: build
     if: inputs.publish_snapshots && github.repository_owner == 'jqassistant-plugin' && github.ref == 'refs/heads/main' && github.event_name != 'pull_request'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ts-graphviz/setup-graphviz@v1
       - uses: actions/setup-java@v3
         with:

.github/workflows/release.yml

@@ -40,7 +40,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ inputs.branch }}