community/clamav: upgrade to 1.2.0
Full release notes at https://github.com/Cisco-Talos/clamav/releases/tag/clamav-1.2.0 - includes the upgrade of the UnRAR library.
Full release notes at https://github.com/Cisco-Talos/clamav/releases/tag/clamav-1.2.0 - includes the upgrade of the UnRAR library.