Bump pygments from 2.7.3 to 2.7.4

Bumps [pygments](https://github.com/pygments/pygments) from 2.7.3 to 2.7.4.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.7.3...2.7.4)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -25,7 +25,7 @@ pandas==1.1.5
 pexpect==4.8.0
 ptyprocess==0.6.0
 pycparser==2.20
-Pygments==2.7.3
+Pygments==2.7.4
 python-dateutil==2.8.1
 pytz==2020.4
 requests==2.25.1