build(deps): bump pillow from 12.1.1 to 12.2.0 in /docs

Bumps [pillow](https://github.com/python-pillow/Pillow) from 12.1.1 to 12.2.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](https://github.com/python-pillow/Pillow/compare/12.1.1...12.2.0)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 12.2.0
  dependency-type: direct:production
...

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

docs/requirements.txt

@@ -5,5 +5,5 @@ mkdocs-awesome-nav==3.3.0
 mkdocs-open-in-new-tab==1.0.8
 mkdocs-redirects==1.2.2
 CairoSVG==2.9.0
-pillow==12.1.1
+pillow==12.2.0
 click==8.2.1