fix news 2024-03-8

unify_api/modules/qkadmin/views/new_mgr.py

@@ -71,7 +71,7 @@ async def post_news_detail(request, body: NewsInfoReq) -> NewsInfoRsp:
     return NewsInfoRsp(title=r["title"], news_type=r["news_type"],
                        keywords=r["keywords"], contents=r["contents"],
                        news_url=r["news_url"], cover_url=r["cover_url"],
-                       pub_time=r["pub_time"])
+                       pub_time=str(r["pub_time"]))
 
 
 @summary("置顶/取消置顶文章")