Bump pygments from 2.7.2 to 2.7.4

Bumps [pygments](https://github.com/pygments/pygments) from 2.7.2 to 2.7.4.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.7.2...2.7.4)

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

requirements-dev.txt

@@ -28,7 +28,7 @@ pathspec==0.8.1
 pluggy==0.13.1
 pre-commit==2.9.0
 py==1.9.0
-pygments==2.7.2
+pygments==2.7.4
 pyparsing==2.4.7
 pytest-cov==2.10.1
 pytest==6.1.2