iTerm2 3.2.9

The only change in version 3.2.9 vs 3.2.8 is that
it was built with libssh2 1.8.2 because of a
security vulnerability. iTerm2 version 3.2.8 was
built with libssh2 1.8.0.

More information on the vulnerability in libssh2
may be found here:

https://nvd.nist.gov/vuln/detail/CVE-2019-3855