Bump actions/setup-java from 2.3.1 to 2.4.0

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 2.3.1 to 2.4.0.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@v2.3.1...v2.4.0)

---
updated-dependencies:
- dependency-name: actions/setup-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
       with:
         node-version: '12.x'
 
-    - uses: actions/setup-java@v2.3.1
+    - uses: actions/setup-java@v2.4.0
       with:
         distribution: 'adopt'
         java-version: '8'