added Java distribution setting to GitHub workflow

Signed-off-by: Konstantin Läufer <laufer@cs.luc.edu>

Author: klaeufer

.github/workflows/main_primechecker.yml

@@ -25,6 +25,7 @@ jobs:
         uses: actions/setup-java@v1
         with:
           java-version: ${{ env.JAVA_VERSION }}
+          distribution: temurin
 
       - name: 'Restore Project Dependencies Using Mvn'
         shell: bash