Update vulkan-docs version

Update vulkan-docs version

To support recent additions to vk.xml a few small changes had to be
done in gen_framework.py. There are also two new handle types:
VkMicromapEXT and VkOpticalFlowSessionNV. Instead of copying and
pasting null driver classes for them a new macro was added.
All other basic null driver classes were also replaced using this
macro which reduced number of ifdefs for VK SC in vkNullDriver.cpp.

Components: Framework, Vulkan
VK-GL-CTS Issue: 10356

Affects:
dEQP-VK.*

Change-Id: I499a9a747d4dda25ea4853f0694a46dac4a1f872