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](pygments/pygments@2.6.1...2.7.4)

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

Author: dependabot[bot]

requirements.txt

@@ -27,7 +27,7 @@ pdfminer.six==20200402
 Pillow==7.1.2
 pycparser==2.20
 pycryptodome==3.9.7
-Pygments==2.6.1
+Pygments==2.7.4
 PyPDF2==1.26.0
 pyperclip==1.8.0
 pyscreenshot==1.0