lua-messagepack: bump to version 0.3.1

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
lua-posix: bump to version 32

the patch was merged upstream,
see https://github.com/luaposix/luaposix/pull/117

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>