v3.1.8

【新增】length 函数，计算字符串或字符数组的长度，示例 length(response.body) == 1165
【优化】指定常用 CipherSuites，兼容老加密套件

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【New Addition】The length function is introduced to calculate the length of a string or a character array. Example: length(response.body) == 1165.
【Optimization】Specify commonly used CipherSuites to ensure compatibility with older encryption suites.