Bump actions/checkout from 2.3.4 to 3.0.2

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.3.4 to 3.0.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2.3.4...v3.0.2)

---
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/build.yml

@@ -16,7 +16,7 @@ jobs:
         architecture: [ 'x64' ]
     name: Build with JDK ${{ matrix.java }} on ${{ matrix.architecture }}
     steps:
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v3.0.2
       - name: Setup JDK
         uses: actions/setup-java@v1
         with: