How can set socks5 proxy for google tts?

Configuration
1

I can’t get access to google’s tts service,so set https ,http and socks5 proxy on the port 10800, proxy server:127.0.0.1.
How to write the proper tts in configuration.yaml then?

tts:
  - platform: google_translate
    cache: true
    cache_dir: /tmp/tts
    time_memory: 300
    base_url: https://127.0.0.1:10800
    service_name: google_say

It can’t work!