security/tor-devel: Update 0.3.4.6-rc -> 0.3.4.7-rc
Changelog: https://gitweb.torproject.org/tor.git/tree/ChangeLog?h=tor-0.3.4.7-rc&id=8465a8d84647c349d5995807b93a06f3afdd6185
Reported by: upstream notification