Bump pygments from 2.4.1 to 2.4.2

Bumps [pygments](https://bitbucket.org/birkenfeld/pygments-main) from 2.4.1 to 2.4.2.
- [Changelog](https://bitbucket.org/birkenfeld/pygments-main/src/default/CHANGES)
- [Commits](https://bitbucket.org/birkenfeld/pygments-main/commits)

Author: dependabot-preview[bot]

requirements.txt

@@ -4,7 +4,7 @@ chardet==3.0.4
 docutils==0.14
 idna==2.8
 pkginfo==1.5.0.1
-Pygments==2.4.1
+Pygments==2.4.2
 readme-renderer==24.0
 requests==2.22.0
 requests-toolbelt==0.9.1