Bump SSH.NET from 2013.4.7 to 2020.0.2 in /src/Lithnet.SshMA

Bumps [SSH.NET](https://github.com/sshnet/SSH.NET) from 2013.4.7 to 2020.0.2.
- [Release notes](https://github.com/sshnet/SSH.NET/releases)
- [Commits](https://github.com/sshnet/SSH.NET/commits/2020.0.2)

---
updated-dependencies:
- dependency-name: SSH.NET
  dependency-type: direct:production
...

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

Author: dependabot[bot]

src/Lithnet.SshMA/packages.config

@@ -3,5 +3,5 @@
   <package id="Costura.Fody" version="1.3.3.0" targetFramework="net452" developmentDependency="true" />
   <package id="Fody" version="1.28.3" targetFramework="net452" developmentDependency="true" />
   <package id="Lithnet.Logging" version="1.0.5774.20685" targetFramework="net40" />
-  <package id="SSH.NET" version="2013.4.7" targetFramework="net40" />
+  <package id="SSH.NET" version="2020.0.2" targetFramework="net40" />
 </packages>