Bump paramiko from 2.4.0 to 2.4.1

Bumps [paramiko](https://github.com/paramiko/paramiko) from 2.4.0 to 2.4.1.
- [Release notes](https://github.com/paramiko/paramiko/releases)
- [Changelog](https://github.com/paramiko/paramiko/blob/master/NEWS)
- [Commits](https://github.com/paramiko/paramiko/compare/2.4.0...2.4.1)

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

requirements.txt

@@ -4,7 +4,7 @@ Jinja2==2.8
 MarkupSafe==1.0
 boto==2.48.0
 ecdsa==0.11
-paramiko==2.4.0
+paramiko==2.4.1
 pycrypto==2.6.1
 wsgiref==0.1.2
 docopt==0.6.2