[dev-context] CGModules new: PresVoz version 2021.12.06 published.

Pablo Rodriguez submitted the new PresVoz package. Version number: 2021.12.06 License type: GNU General Public License Wants to be in ConTeXt distribution: yes Wants to be synced with CTAN: no Summary description: Generating presentations with voice. Announcement text: ---------------------------------------------------------------------- Remote revision: 5b07a31, log message: doc added ----------------------------------------------------------------------