Update revision of SPIR-V Translator

New version of the translator includes fix of crash at translation of invalid
llvm.dbg.value instruction

Author: AlexeySotkin

CMakeLists.txt

@@ -84,7 +84,7 @@ if(NOT USE_PREBUILT_LLVM)
     set(CLANG_BASE_REVISION 4519e2637fcc4bf6e3049a0a80e6a5e7b97667cb)
 
     set(SPIRV_SOURCE_DIR ${LLVM_SOURCE_DIR}/projects/llvm-spirv)
-    set(SPIRV_BASE_REVISION 8ce6443ec1020183eafaeb3410c7d1edc2355dc3)
+    set(SPIRV_BASE_REVISION cafdc8a81d56e256f543294f41546ef347aa902a)
 
     apply_patches(${CLANG_SOURCE_DIR}
                   ${CMAKE_CURRENT_SOURCE_DIR}/patches/clang