package/python-glslang: bump version to 16.1.0
https://github.com/KhronosGroup/glslang/blob/16.1.0/CHANGES.md
Supports spirv-{headers, tools} version 1.4.335.0:
https://github.com/KhronosGroup/glslang/commit/209b675bf0c0d82c0e536bcb3cb7e1011957dd59
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Julien Olivain <ju.o@free.fr>