Bump pygments from 2.17.2 to 2.20.0

Bumps [pygments](https://github.com/pygments/pygments) from 2.17.2 to 2.20.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.17.2...2.20.0)

---
updated-dependencies:
- dependency-name: pygments
  dependency-version: 2.20.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -10,7 +10,7 @@ Markdown-Video @ git+https://github.com/Holzhaus/Python-Markdown-Video@98725ee09
 MarkupSafe==2.1.3
 pelican==4.9.1
 pelican-render-math==1.0.4
-Pygments==2.17.2
+Pygments==2.20.0
 python-dateutil==2.8.2
 pytz==2023.3.post1
 PyYAML==5.3.1