There's a merged pull request on the void-packages repository

Firefox Updated to 70.0.1
https://github.com/void-linux/void-packages/pull/16020

Description:
Convenient update for testing nss 3.47 #15946 
Built on:
- [x] x86_64
- [x] x86_64-musl
- [x] armv7hf
Tested with:
- [x] x86_64
- [x] x86_64-musl

Everything is tested again nss 3.47, firefox x86_64-musl also tested with nss 3.46