Switched to Java 11

Author: simasch

.github/workflows/build.yml

@@ -35,10 +35,10 @@ jobs:
       - name: Install demo project
         run: sh ${{ github.workspace }}/scripts/2_install_demo_project.sh
 
-      - name: Set up JDK 8
+      - name: Set up JDK 11
         uses: actions/setup-java@v2
         with:
-          java-version: '8'
+          java-version: '11'
           distribution: 'adopt'
           server-id: ossrh
           server-username: MAVEN_USERNAME

.github/workflows/release.yml

@@ -31,10 +31,10 @@ jobs:
       - name: Install demo project
         run: sh ${{ github.workspace }}/scripts/2_install_demo_project.sh
 
-      - name: Set up JDK 8
+      - name: Set up JDK 11
         uses: actions/setup-java@v2
         with:
-          java-version: '8'
+          java-version: '11'
           distribution: 'adopt'
           server-id: ossrh
           server-username: MAVEN_USERNAME