Bump actions/setup-java from 1 to 2.3.0

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 1 to 2.3.0.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@v1...v2.3.0)

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

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
                 restore-keys: |
                     ${{ runner.os }}-jdk-${{ matrix.jdk }}-gradlewrapper-${{ hashFiles('**/gradle-wrapper.properties') }}-gradlescripts-
             - name: Set up JDK
-              uses: actions/setup-java@v1
+              uses: actions/setup-java@v2.3.0
               with:
                   java-version: ${{ matrix.jdk }}
             - run: ./gradlew build --stacktrace --warning-mode all
@@ -61,7 +61,7 @@ jobs:
                 key: releasing-${{ runner.os }}-jdk-${{ matrix.jdk }}-gradlewrapper-${{ hashFiles('**/gradle-wrapper.properties') }}-gradlescripts-${{ hashFiles('**/*.gradle*') }}
 
             - name: Set up Java 11
-              uses: actions/setup-java@v1
+              uses: actions/setup-java@v2.3.0
               with:
                   java-version: 11