fix utc issues using new celery version
fix utc issues using new celery version

pirata-cat/agora-ciudadana,joanma100/agora-ciudadana,joanma100/agora-ciudadana,pirata-cat/agora-ciudadana,joanma100/agora-ciudadana,pirata-cat/agora-ciudadana,joanma100/agora-ciudadana