refactor(java11) - convert most modules to java 11 (datahub-project#5836)

Co-authored-by: Shirshanka Das <[email protected]>

Author: leifker

.github/workflows/build-and-test.yml

@@ -25,10 +25,10 @@ jobs:
     timeout-minutes: 60
     steps:
       - uses: actions/checkout@v2
-      - name: Set up JDK 1.8
+      - name: Set up JDK 11
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 11
       - uses: actions/setup-python@v2
         with:
           python-version: "3.7"

.github/workflows/check-datahub-jars.yml

@@ -30,10 +30,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - name: Set up JDK 1.8
+      - name: Set up JDK 11
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 11
       - uses: actions/setup-python@v2
         with:
           python-version: "3.7"