修复UniMessage.dump(media_save_dir=False,json=True)时，序列化失败的问题#132
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修复UniMessage.dump(media_save_dir=False,json=True)时，序列化失败的问题#132SnowMoonSS wants to merge 1 commit intononebot:masterfrom
SnowMoonSS wants to merge 1 commit intononebot:masterfrom
