fix: 未配置微信证书时，自动获取证书后仍然使用之前的微信配置

[Wsmallnews]

当调用 商家转账到零钱 接口，配置中未设置 微信平台公钥证书路径 时，报错 参数异常: 微信公钥序列号为找到

经排查代码在 get_wechat_serial_no 方法中会做判断如果配置中未设置 微信平台公钥证书路径 时，会自动生成 微信平台公钥证书，并更新配置参数

但在接下来调用 get_wechat_public_key，方法获取证书时，使用的是之前获取的 config 信息，而这里面还没有包含新生成的 微信平台公钥证书，导致证书找不到报错 参数异常: 微信公钥序列号为找到

修复方式如下, 提现举例：

    protected function encryptSensitiveData(array $params, array $config, Collection $payload): array
    {
        $data['transfer_detail_list'] = $payload->get('transfer_detail_list', []);
        $data['_serial_no'] = get_wechat_serial_no($params);

        $config = get_provider_config('wechat', $params);      // 获取证书前，重新读取配置
        $publicKey = get_wechat_public_key($config, $data['_serial_no']);

        foreach ($data['transfer_detail_list'] as $key => $list) {
            if (!empty($list['user_name'])) {
                $data['transfer_detail_list'][$key]['user_name'] = encrypt_wechat_contents($list['user_name'], $publicKey);
            }
        }

        return $data;
    }

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.41%. Comparing base (2ea20b7) to head (68a41f3). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1026 +/- ## ========================================= Coverage 97.41% 97.41% Complexity 1032 1032 ========================================= Files 374 374 Lines 6763 6768 +5 ========================================= + Hits 6588 6593 +5 Misses 175 175 ```

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