chore(python-deps): bump pillow from 11.1.0 to 11.3.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 11.1.0 to 11.3.0.
- [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/11.1.0...11.3.0)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 11.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -145,7 +145,7 @@ packaging==24.2
     # via huggingface-hub
 pandas==2.2.3
     # via llama-stack-client
-pillow==11.1.0
+pillow==11.3.0
     # via llama-stack
 prompt-toolkit==3.0.50
     # via