chore(deps-dev): bump pillow (#101)

Bumps the pip group with 1 update in the /libs/upstage directory: [pillow](https://github.com/python-pillow/Pillow).


Updates `pillow` from 12.2.0 to 12.3.0
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@12.2.0...12.3.0)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 12.3.0
  dependency-type: direct:development
  dependency-group: pip
...

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