[test] fix test_printable_value_bytes with current pygments An empty span was added in https://bitbucket.org/birkenfeld/pygments-main/commits/164574c13533195a555181a2b9c685fea2470403 (grafted from 74b04a88d28a)

cubicweb-web: embedded-javascript-library usr/share/cubicweb/cubes/shared/data/jquery.js