Proposed commit log message:
```
net/v2ray: Update to 4.20.0
- Dependencies are not shipped with the tarball anymore, define
these dependencies in GH_TUPLE.
- Add test target
Changelog:
https://github.com/v2ray/v2ray-core/compare/v4.14.0...v4.20.0
PR: 239219
Reviewed_by: koobs
Approved by: koobs (ports), shen.elf@gmail.com (maintainer)
Differential_Revision: D20968
```