build(deps): bump pygments from 2.7.1 to 2.7.4 (#274)

Bumps [pygments](https://github.com/pygments/pygments) from 2.7.1 to 2.7.4.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.7.1...2.7.4)

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

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

Author: dependabot[bot]

requirements.txt

@@ -90,7 +90,7 @@ pycairo==1.19.1
 pycodestyle==2.6.0
 pycparser==2.20
 pyflakes==2.2.0
-Pygments==2.7.1
+Pygments==2.7.4
 pylint==2.6.0
 pynvim==0.4.2
 pyodbc==4.0.30