Build(deps): [Security] Bump sshpk from 1.13.1 to 1.16.1
Build(deps): [Security] Bump sshpk from 1.13.1 to 1.16.1

Bumps [sshpk](https://github.com/joyent/node-sshpk) from 1.13.1 to 1.16.1. **This update includes security fixes.**
- [Release notes](https://github.com/joyent/node-sshpk/releases)
- [Commits](https://github.com/joyent/node-sshpk/compare/v1.13.1...v1.16.1)
FaKeller/sireg,FaKeller/sireg