build(deps): bump net-ssh from 5.0.2 to 6.1.0

Bumps [net-ssh](https://github.com/net-ssh/net-ssh) from 5.0.2 to 6.1.0.
- [Release notes](https://github.com/net-ssh/net-ssh/releases)
- [Changelog](https://github.com/net-ssh/net-ssh/blob/master/CHANGES.txt)
- [Commits](net-ssh/net-ssh@v5.0.2...v6.1.0)

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

Author: dependabot[bot]

Gemfile.lock

@@ -289,7 +289,7 @@ GEM
     mustache (1.1.1)
     mustermann (1.0.3)
     mysql2 (0.5.2)
-    net-ssh (5.0.2)
+    net-ssh (6.1.0)
     netaddr (2.0.4)
     netrc (0.11.0)
     newrelic_rpm (5.3.0.346)