Bump pygments from 2.7.3 to 2.7.4 (#403)

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](https://github.com/pygments/pygments/compare/2.7.3...2.7.4)

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

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

requirements.txt

@@ -7,6 +7,6 @@ Kivy==2.0.0
 Kivy-Garden==0.1.4
 kivymd==0.104.1
 Pillow==8.1.1
-Pygments==2.7.3
+Pygments==2.7.4
 requests==2.25.0
 urllib3==1.26.3