[dev-context] CGModules update: simpleslides version 2023-04-13 published.

Henning Hraban Ramm submitted an update to the simpleslides package. Version number: 2023-04-13 License type: GNU General Public License Wants to be in ConTeXt distribution: yes Wants to be synced with CTAN: yes Summary description: A module for creating presentations in ConTeXt. Announcement text: ---------------------------------------------------------------------- Same version as before, but as ZIP ----------------------------------------------------------------------