TEMP: Take a git reference on vk-parse for the upcoming vk.xml `<…

…enums type="constants">` attribute (#918)

Without a `vk-parse` change, adding `type="constants"` to `<enums>`
in `vk.xml` will cause all our constants to be lost.  Use the patched
crate until it's merged and released upstream, to unblock the proposed
`vk.xml` change.

https://togithub.com/krolli/vk-parse/pull/32
https://togithub.com/KhronosGroup/Vulkan-Docs/pull/2366

Cargo.toml

@@ -9,3 +9,8 @@ members = [
     "generator",
     "generator-rewrite",
 ]
+
+[patch.crates-io]
+# https://github.com/krolli/vk-parse/pull/32
+# https://togithub.com/KhronosGroup/Vulkan-Docs/pull/2366
+vk-parse = { git = "https://github.com/MarijnS95/vk-parse", rev = "97848b1" }