Merge pull request #251 from geertjanw/develop

Use fixed version and move away from Adopt

Author: simlei

.github/workflows/maven.yml

@@ -13,7 +13,9 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-
+    strategy:
+      matrix:
+        java: [ '11', '11.0.3' ]
     steps:
     - name: Checkout core repository
       uses: actions/checkout@v2
@@ -30,7 +32,7 @@ jobs:
     - name: Set up JDK 11
       uses: actions/setup-java@v2
       with:
-        java-version: '11'
-        distribution: 'adopt'
+        java-version: ${{ matrix.java }}
+        distribution: 'zulu'
     - name: Build with Maven
       run: mvn clean package --file $GITHUB_WORKSPACE/core/org.jcryptool.releng/pom.xml