Proposed commit log message:
```
net/v2ray: Update to 4.31.0
Changelog:
https://github.com/v2ray/v2ray-core/releases/tag/v4.31.0
PR: 250672
Reviewed_by: koobs
Approved by: koobs (ports, mentor), shen.elf@gmail.com (maintainer)
Differential_Revision: D26969
```