Bump pygments from 2.19.2 to 2.20.0 in /docs

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]

docs/requirements.txt

@@ -45,7 +45,7 @@ pefile==2022.5.30 ; python_version >= "3.10" and python_version < "3.15" and sys
 platformdirs==2.5.2 ; python_version >= "3.10" and python_version < "3.15"
 pluggy==1.5.0 ; python_version >= "3.10" and python_version < "3.15"
 pydocstyle==6.3.0 ; python_version >= "3.10" and python_version < "3.15"
-pygments==2.19.2 ; python_version >= "3.10" and python_version < "3.15"
+pygments==2.20.0 ; python_version >= "3.10" and python_version < "3.15"
 pyinstaller-hooks-contrib==2026.0 ; python_version >= "3.10" and python_version < "3.15"
 pyinstaller==6.19.0 ; python_version >= "3.10" and python_version < "3.15"
 pylint==4.0.5 ; python_version >= "3.10" and python_version < "3.15"