Java 8

Author: simasch

.github/workflows/build.yml

@@ -43,7 +43,7 @@ jobs:
       - name: Set up JDK 11
         uses: actions/setup-java@v2
         with:
-          java-version: '11'
+          java-version: '8'
           distribution: 'adopt'
           server-id: ossrh
           server-username: MAVEN_USERNAME