Updated duktape to v1.2.3.
Updated duktape to v1.2.3.

ndob/duktape-node,ndob/duktape-node,yosuke-furukawa/duktape-node,yosuke-furukawa/duktape-node,Oceanswave/duktape-node,ndob/duktape-node,Oceanswave/duktape-node,Oceanswave/duktape-node,yosuke-furukawa/duktape-node