Update to KhronosGroup/SPIRV-Cross@03b485dc (2024-1-24) (#16206)

This brings in updates in CMake and additional MSL feature support like
SPV_EXT_integer_dot_product.
diff --git a/third_party/spirv_cross b/third_party/spirv_cross
index 7c335ed..03b485d 160000
--- a/third_party/spirv_cross
+++ b/third_party/spirv_cross
@@ -1 +1 @@
-Subproject commit 7c335edc663c3cb4dc2cf1babde987d9a8f9d15b
+Subproject commit 03b485dc47c6e84a15936601e8b121d84d8ddadf