Bump pygments from 2.17.2 to 2.20.0 in /py

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]

py/requirements.txt

@@ -3,6 +3,6 @@ click==8.1.7
 markdown-it-py==3.0.0
 mdurl==0.1.2
 protobuf==5.26.1
-Pygments==2.17.2
+Pygments==2.20.0
 rich==13.7.1
 sentencepiece==0.2.0