Changed JDK distribution from 'zulu' to default.

Author: hohwille

.github/workflows/build-pr.yml

@@ -11,7 +11,6 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v2
         with:
-          distribution: 'zulu'
           java-version: '21'
       - name: Build project with Maven
         run: mvn -B -ntp -Dstyle.color=always install