Change exit 0 to Actions specific option

.github/workflows/post-commit.yml

@@ -134,7 +134,7 @@ jobs:
           -Dmaven.test.failure.ignore=true
           -Djacoco.skip=false
           -Dsurefire.rerunFailingTestsCount=3
-          && exit 0
+        continue-on-error: true
       - name: Merge JaCoCo results
         run: mvn -DskipTests -Djacoco.skip=false verify
       - name: Copy JaCoCo XML report to artifacts