luajit: bump new version

* tools: introduce a memory profile parser
* misc: add Lua API for memory profiler
* core: introduce memory profiler
* vm: introduce VM states for Lua and fast functions
* core: introduce write buffer module
* utils: introduce leb128 reader and writer

Relates to #5490
Closes #5442

luajit @ a8af1f71

-Subproject commit 1672bdc0ffbee9f32fadb6943909d6af7eb9a7b1
+Subproject commit a8af1f71ceceb566cd78cd2e5454cc086c677811