There is a new pull request by xtraeme against master on the void-packages repository

https://github.com/xtraeme/void-packages dhcpcd-9.0.0
https://github.com/void-linux/void-packages/pull/20585

dhcpcd: update to 9.0.0; enable privsep.
Tested on x86_64-musl.

A patch file from https://github.com/void-linux/void-packages/pull/20585.patch is attached