New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/pull/48858#issuecomment-1962210600

Comment:
For `build_helper=cmake`, I think we don't need. Just put `/usr/libexec/xbps-src/bin` into the end of `PATH`. if `cmake-bootstrap` is installed, it's picked up from there, if both `cmake` and `cmake-bootstrap` is installed, it will be picked up from `/usr/bin`.