Bump pygments from 2.16.1 to 2.20.0

Bumps [pygments](https://github.com/pygments/pygments) from 2.16.1 to 2.20.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.16.1...2.20.0)

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

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

Author: dependabot[bot]

requirements.dev.txt

@@ -111,7 +111,7 @@ pure-eval==0.2.2
 pycodestyle==2.11.1
 pycparser==2.21
 pyflakes==3.1.0
-pygments==2.16.1
+pygments==2.20.0
 pyparsing==3.1.1
 pyrsistent==0.19.3
 python-json-logger==2.0.7