Update to 0.0.6

This updates the meterpreter_bins gem to v0.0.6. v0.0.5 was never published.

The expected workflow for this PR should be to land this PR, then kick off the Rapid7-internal build and publish job. This will pick up the Windows binaries from rapid7/meterpreter (as of commit 2776adb8b91d9967983033c0e770c46a10a68002 ), package them up in this gem, and push to RubyGems.

Once that happens, I will put together a PR for rapid7/metasploit-framework that actually uses this gem, and removes the binaries from that repo's `data/meterpreter` directory.

I'm hopeful that @cdoughty-r7 will correct me if I'm doing this wrong.