Harfbuzz, libssh and Opus updates

The following projects have been updated:

• Harfbuzz was updated to 2.0.0 then to 2.0.1.
• libssh was updated to 0.8.3 then to 0.8.4.
• Opus was updated to 1.3.

Any projects that have a dependency that was updated has also been updated to build with the latest versions of the new libraries as well.