Fix bit_cast.

Author: bader

sycl/include/sycl/bit_cast.hpp

@@ -8,14 +8,15 @@
 
 #pragma once
 
+#include <type_traits> // for is_trivially_copyable, enable_if_t
+#include <version>     // defines __cpp_lib_bit_cast
+
 #if __cpp_lib_bit_cast
 #include <bit>
 #elif !defined(__has_builtin) || !__has_builtin(__builtin_bit_cast)
 #include <sycl/detail/memcpy.hpp>
 #endif
 
-#include <type_traits> // for is_trivially_copyable, enable_if_t
-
 namespace sycl {
 inline namespace _V1 {