Require GpgME 1.16.0
Many of the newer features require a newer version of GpgME. I think it's time to increase the required version of GpgME and its C++ and Qt bindings for Kleopatra to 1.16.0 which was released 2021-06-24.
@bcooksley This shouldn't be a problem for CI according to !10 (comment 359352)
Edited by Ingo Klöcker