Set up JDK 11 for SonarCloud in github action.

.github/workflows/ci_ut.yml

@@ -67,10 +67,14 @@ jobs:
       - name: Upload coverage report to codecov
         run: |
           CODECOV_TOKEN="09c2663f-b091-4258-8a47-c981827eb29a" bash <(curl -s https://codecov.io/bash)
+      # Set up JDK 11 for SonarCloud.
+      - name: Set up JDK 1.11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.11
       - name: Run SonarCloud Analysis
         run: >
-          mvn verify --batch-mode
-          org.sonarsource.scanner.maven:sonar-maven-plugin:3.6.1.1688:sonar
+          mvn --batch-mode verify sonar:sonar
           -Dsonar.coverage.jacoco.xmlReportPaths=target/site/jacoco/jacoco.xml
           -Dmaven.test.skip=true
           -Dsonar.host.url=https://sonarcloud.io