Bump the all-actions group with 2 updates

Bumps the all-actions group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [actions/setup-java](https://github.com/actions/setup-java).


Updates `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)

Updates `actions/setup-java` from 2 to 4
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@v2...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/main.yml

@@ -26,10 +26,10 @@ jobs:
           - 20
           - 21
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Java ${{ matrix.version }}
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v4
         with:
           distribution: 'zulu'
           java-version: '${{ matrix.version }}'