Drop `redcarpet` gem
Drop `redcarpet` gem

Initially introduced in da540ad5f56192c07f2e764c484431264b62fe7b as a
missing dependency to puppet-strings. I tested this on the puppet-borg
module. The gem isn't required to build our REFERENCE.md.

voxpupuli/modulesync_config,voxpupuli/modulesync_config,puppet-community/modulesync_config,dhoppe/modulesync_config,voxpupuli/modulesync_config,dhoppe/modulesync_config,dhoppe/modulesync_config,voxpupuli/modulesync_config,dhoppe/modulesync_config