[Snyk] Security upgrade Pygments from 2.5.2 to 2.7.4 (#235)
[Snyk] Security upgrade Pygments from 2.5.2 to 2.7.4 (#235)

Co-authored-by: Huang Huang <f0de560b880d34223052a5a2b56f98e56e4905b9@gmail.com>
mozillazg/python-pinyin