FindVulkan: Update for LunarG SDK import library location on Windows

As of at least 1.0.42 of the LunarG SDK, the `vulkan-1.lib` import
library on Windows is stored in `${VULKAN_SDK}/Lib` or
`${VULKAN_SDK}/Lib32`.

Modules/FindVulkan.cmake

@@ -39,12 +39,16 @@ if(WIN32)
     find_library(Vulkan_LIBRARY
       NAMES vulkan-1
       PATHS
-        "$ENV{VULKAN_SDK}/Bin")
+        "$ENV{VULKAN_SDK}/Lib"
+        "$ENV{VULKAN_SDK}/Bin"
+        )
   elseif(CMAKE_SIZEOF_VOID_P EQUAL 4)
     find_library(Vulkan_LIBRARY
       NAMES vulkan-1
       PATHS
-        "$ENV{VULKAN_SDK}/Bin32")
+        "$ENV{VULKAN_SDK}/Lib32"
+        "$ENV{VULKAN_SDK}/Bin32"
+        )
   endif()
 else()
     find_path(Vulkan_INCLUDE_DIR