build(deps): bump ssh2 from 0.8.3 to 0.9.0

Bumps [ssh2](https://github.com/alexcrichton/ssh2-rs) from 0.8.3 to 0.9.0.
- [Release notes](https://github.com/alexcrichton/ssh2-rs/releases)
- [Commits](alexcrichton/ssh2-rs@0.8.3...0.9.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

Cargo.lock

@@ -32,5 +32,5 @@ uart_16550 = "0.2.10"
 
 [dev-dependencies]
 rand = "0.8.1"
-ssh2 = "0.8.3"
+ssh2 = "0.9.0"
 tempfile = "3.1.0"