Log Message:
security/ruby-net-ssh: update to 6.0.2

Update ruby-net-ssh to 6.0.2.

=== 6.0.2

  * Fix corrupted hmac issue in etm hmac [#759]

=== 6.0.1

  * Make sha2-{256,512}-etm@openssh.com MAC opt-in as they seems to have issues \ 
[#757]

=== 6.0.0

  * Support empty lines and comments in known_hosts [donoghuc, #742]
  * Add sha2-{256,512}-etm@openssh.com MAC algorithms [graaff, #714]

=== 6.0.0 beta2

  * Support :certkeys and CertificateFile configuration option  [Anders Carling, \ 
#722]

=== 6.0.0 beta1

  * curve25519sha256 support [Florian Wininger ,#690]
  * disabled insecure algs [Florian Wininger , #709]