update ext/libstorj submodule
update ext/libstorj submodule

(cherry picked from commit 210525ec1015ef4176ab8454d3c11f793d94aca0)

bryanchriswhite/ruby-libstorj,bryanchriswhite/ruby-libstorj,bryanchriswhite/ruby-libstorj,bryanchriswhite/ruby-libstorj