Update kubernetes projects version in vendor to 1.12.1

vendor/github.com/modern-go/reflect2/unsafe_link.go

@@ -67,4 +67,4 @@ func add(p unsafe.Pointer, x uintptr, whySafe string) unsafe.Pointer {
 // the benefit is to surface this assumption at the call site.)
 func arrayAt(p unsafe.Pointer, i int, eltSize uintptr, whySafe string) unsafe.Pointer {
 	return add(p, uintptr(i)*eltSize, "i < len")
-}
+}