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+Add a password complexity requirement when adding or modifying Dashboard users via the API.
+Now password must contain at least 2 of alphabetic, numeric and special characters,
+and must be 8 to 64 characters long.
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+通过 API 添加、修改 Dashboard 用户时，增加对密码复杂度的要求。
+现在密码必须包含字母、数字以及特殊字符中的至少 2 种，并且长度范围必须是 8~64 个字符。
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