Bump pygments from 2.19.2 to 2.20.0 in /notebook_python

Bumps [pygments](https://github.com/pygments/pygments) from 2.19.2 to 2.20.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.19.2...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]

notebook_python/requirements_notebook.txt

@@ -60,7 +60,7 @@ prompt_toolkit==3.0.52
 psutil==7.1.0
 pure_eval==0.2.3
 pycparser==2.23
-Pygments==2.19.2
+Pygments==2.20.0
 python-dateutil==2.9.0.post0
 python-json-logger==4.0.0
 pywin32==311 ; platform_system == "Windows"