Bump pillow from 11.3.0 to 12.1.1

Bumps [pillow](https://github.com/python-pillow/Pillow) from 11.3.0 to 12.1.1.
- [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/11.3.0...12.1.1)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 12.1.1
  dependency-type: direct:production
...

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

requirements.txt

@@ -22,7 +22,7 @@ multidict==6.6.4
 ollama==0.6.0
 openai==1.102.0
 orjson>=3.11.5
-pillow==11.3.0
+pillow==12.1.1
 propcache==0.3.2
 pydantic==2.11.7
 pydantic-settings==2.10.1