Bump ssh2 and tunnel-ssh

Bumps [ssh2](https://github.com/mscdex/ssh2) and [tunnel-ssh](https://github.com/agebrock/tunnel-ssh). These dependencies needed to be updated together.

Updates `ssh2` from 0.5.4 to 1.4.0
- [Commits](mscdex/ssh2@v0.5.4...v1.4.0)

Updates `tunnel-ssh` from 4.1.4 to 4.1.6
- [Commits](https://github.com/agebrock/tunnel-ssh/commits)

---
updated-dependencies:
- dependency-name: ssh2
  dependency-type: indirect
- dependency-name: tunnel-ssh
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>