Update known_good.json to pick up SPV_KHR_workgroup_memory_explicit_layout

Also update the test expectations regarding validation accordingly and
the in-tree spirv.hpp copy.

Test/baseResults/hlsl.load.2dms.dx10.frag.out

@@ -357,6 +357,7 @@ using depth_any
 0:?     '@entryPointOutput.Depth' ( out float FragDepth)
 0:?     '@entryPointOutput.Color' (layout( location=0) out 4-component vector of float)
 
+Validation failed
 // Module Version 10000
 // Generated by (magic number): 8000a
 // Id's are bound by 130

Test/baseResults/hlsl.load.offset.dx10.frag.out

@@ -561,6 +561,7 @@ using depth_any
 0:?     '@entryPointOutput.Depth' ( out float FragDepth)
 0:?     '@entryPointOutput.Color' (layout( location=0) out 4-component vector of float)
 
+Validation failed
 // Module Version 10000
 // Generated by (magic number): 8000a
 // Id's are bound by 201

Test/baseResults/hlsl.load.offsetarray.dx10.frag.out

@@ -435,6 +435,7 @@ using depth_any
 0:?     '@entryPointOutput.Depth' ( out float FragDepth)
 0:?     '@entryPointOutput.Color' (layout( location=0) out 4-component vector of float)
 
+Validation failed
 // Module Version 10000
 // Generated by (magic number): 8000a
 // Id's are bound by 174

Test/baseResults/spv.nullInit.comp.out

@@ -1,5 +1,4 @@
 spv.nullInit.comp
-Validation failed
 // Module Version 10000
 // Generated by (magic number): 8000a
 // Id's are bound by 37