Bump pygments from 2.4.2 to 2.7.4 (#158)

Bumps [pygments](https://github.com/pygments/pygments) from 2.4.2 to 2.7.4.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](https://github.com/pygments/pygments/compare/2.4.2...2.7.4)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -14,7 +14,7 @@ pendulum==2.0.5
 pkginfo==1.5.0.1
 progressbar==2.5
 pybloom-live==3.0.0
-Pygments==2.4.2
+Pygments==2.7.4
 python-dateutil==2.8.0
 pytzdata==2019.2
 readme-renderer==24.0