fix: 恢复异步队列消息序列化方式 --story=126514126

# Reviewed, transaction id: 54999

Author: guohelu

config/default.py

@@ -238,7 +238,7 @@
     INSTALLED_APPS = locals().get("INSTALLED_APPS", [])
     INSTALLED_APPS += ("django_celery_beat", "django_celery_results")
     CELERY_ENABLE_UTC = False
-    CELERY_TASK_SERIALIZER = "json"
+    CELERY_TASK_SERIALIZER = "pickle"
     CELERYBEAT_SCHEDULER = "django_celery_beat.schedulers.DatabaseScheduler"
 
 TEMPLATE_DATA_SALT = "821a11587ea434eb85c2f5327a90ae54"