Resolve Tencent captcha failed

What does this MR do and why?

Bug 原因：腾讯验证码 API response 中 CaptchaMsg 的值从 OK 变成了 ok.

目前的判断逻辑 res.CaptchaMsg == "OK" tencent_captcha.rb#L41

根据下面API的调试信息和对应的SDK源码 以及核查验证码票据结果(Web及APP) 可以得到一个结论 CaptchaCode 等于 1 代表验证码验证通过。

验证码被解决的API返回

#<TencentCloud::Captcha::V20190722::DescribeCaptchaResultResponse:0x000000016214f740 @CaptchaCode=1, @CaptchaMsg="ok", @EvilLevel=0, @GetCaptchaTime=0, @RequestId="7bdbc1d0-6585-4c75-9974-3f7f829dd171">

验证码超时的API返回

#<TencentCloud::Captcha::V20190722::DescribeCaptchaResultResponse:0x000000016f76f488 @CaptchaCode=8, @CaptchaMsg="ticket expired 详情请参考：腾讯云-天御验证码-产品文档，搜索关键字“DescribeCaptchaResult”，查看输出参数中CaptchaCode字段的具体描述", @EvilLevel=0, @GetCaptchaTime=0, @RequestId="75fb4d62-0995-4b08-8bf1-8eb215aa69f8">

Random Str不匹配的API返回

#<TencentCloud::Captcha::V20190722::DescribeCaptchaResultResponse:0x000000013ba97a18 @CaptchaCode=7, @CaptchaMsg="captcha no match 详情请参考：腾讯云-天御验证码-产品文档，搜索关键字“DescribeCaptchaResult”，查看输出参数中CaptchaCode字段的具体描述", @EvilLevel=0, @GetCaptchaTime=0, @RequestId="44ac2226-0ba2-4d5e-8855-4e5607d158a0">

• log api response
• use CaptchaCode to check whether captcha is solved

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Related to #1327 (closed)