Ethan Chen

fork更新

- upgrade ssh signer from ssh-rsa(rsa-sha1) to rsa-sha2-256

``` File "/var/env/wiki3.9/lib/python3.9/site-packages/wechatpy/client/api/jsapi.py", line 45, in get_jsapi_ticket if not ticket or expires_at < int(time.time()): TypeError: '