Bump paramiko from 2.4.1 to 2.4.2

Bumps [paramiko](https://github.com/paramiko/paramiko) from 2.4.1 to 2.4.2.
- [Release notes](https://github.com/paramiko/paramiko/releases)
- [Changelog](https://github.com/paramiko/paramiko/blob/master/NEWS)
- [Commits](paramiko/paramiko@2.4.1...2.4.2)

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

requirements.txt

@@ -13,7 +13,7 @@ ipaddress==1.0.22
 jsonschema==2.5.1
 lazy-object-proxy==1.2.1
 mccabe==0.4.0
-paramiko==2.4.1
+paramiko==2.4.2
 pep8==1.7.1
 psutil==5.4.7
 pyasn1==0.4.4