Bump pillow in /pkg/preprocessing/chat_completions_template

Bumps [pillow](https://github.com/python-pillow/Pillow) from 11.2.1 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](python-pillow/Pillow@11.2.1...11.3.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pkg/preprocessing/chat_completions_template/requirements.txt

@@ -1,5 +1,5 @@
 packaging==24.2
-pillow==11.2.1
+pillow==11.3.0
 torch==2.7.0
 transformers>=4.53.0
 jinja2>=2.11