build(deps): bump pygments from 2.19.1 to 2.20.0 (#9824)

Bumps [pygments](https://github.com/pygments/pygments) from 2.19.1 to 2.20.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.19.1...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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -16,6 +16,6 @@ PyYAML == 6.0.3        # for parsing/writing YAML
 oras == 0.2.42         # for OCI stuff in mapper-oci-update
 Jinja2 == 3.1.6        # for templating
 rich == 15.0.0         # for rich text formatting
-Pygments == 2.19.1     # syntax highlighting, required by rich.syntax (imported by lib/tools/patching.py)
+Pygments == 2.20.0     # syntax highlighting, required by rich.syntax (imported by lib/tools/patching.py)
 dtschema == 2026.4     # for checking dts files and dt bindings
 yamllint == 1.38.0     # for checking dts files and dt bindings