macOS: Test version of desktop client with HTTP2

Hi everyone,

Here is a build of 2.4.2 (pre-release, not final) with HTTP2 support for macOS:

To check if it uses HTTP/2, you can click on the :lock: icon in the UI, the first item should be "HTTP/2" if your server supports it too..

Please report back any issues you might have :slight_smile: