Reducing java version to 11 in pipeline

Author: stevewalton28

.github/workflows/maven.yml

@@ -20,10 +20,10 @@ jobs:
       SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 14
+    - name: Set up JDK 11
       uses: actions/setup-java@v1
       with:
-        java-version: 14
+        java-version: 11
     - name: Setup display for running Chrome
       run: |
         chmod ugo+x scripts/publish-javadocs-to-github-pages.sh