textproc/fcitx5: Update to 5.1.21
- Take maintainership
- Add build dependency on x11/plasma-wayland-protocols: since 5.1.20 the Wayland module calls find_package(PlasmaWaylandProtocols 1.20 REQUIRED) when USE_SYSTEM_PLASMA_WAYLAND_PROTOCOLS is on (the default). Bump the wayland-protocols requirement to 1.46 to match CMakeLists.txt .
Approved by: khng@FreeBSD.org (maintainer)