Updater lack proxy configuration

### Description

The updater don't use proxy as main program.
### Steps to reproduce
Set a http proxy e.g. --proxy-server=http://.....
And run program.
Then I find updater is using direct connection to check the update.

Describe how what happens differs from what you expected.

The updater **should** use proxy same as main program but it's not.

Logs being sent: yes/no

### Version information

- **Platform**: desktop

For the desktop app:

- **OS**: Windows, macOS, Ubuntu, Arch Linux, etc?
- win7 x64
- **Version**: 1.x.y
- 1.7.29