Previously we relied on 0.8.x this a major version upgrade.
Versions of ssh2 <1.4.0 are vulnerable to OS Command injection on Windows.
See https://github.com/advisories/GHSA-652h-xwhf-q4h6
Functional tests passed with latest ssh2 on both Linux and IBM i.
Fixes #338
Previously we relied on 0.8.x this a major version upgrade. Versions of ssh2 <1.4.0 are vulnerable to OS Command injection on Windows. See https://github.com/advisories/GHSA-652h-xwhf-q4h6 Functional tests passed with latest ssh2 on both Linux and IBM i.