Bump pygments from 2.6.1 to 2.7.4

Bumps [pygments](https://github.com/pygments/pygments) from 2.6.1 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/2.6.1...2.7.4)

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

requirements.txt

@@ -36,7 +36,7 @@ Pillow==7.2.0
 plyer==1.4.3
 pycparser==2.20
 pyfiglet==0.8.post1
-Pygments==2.6.1
+Pygments==2.7.4
 pylint==2.6.0
 pypng==0.0.20
 PyQRCode==1.2.1