added allow failure to sonarqube script temporarily

.gitlab-ci.yml

@@ -38,6 +38,7 @@ SonarScanner:
     name: sonarsource/sonar-scanner-cli:latest
     entrypoint: [""]
   stage: sonarqube
+  allow_failure: true
   script:
     - sonar-scanner
       -Dsonar.host.url=https://pmpl.cs.ui.ac.id/sonarqube-advprog