build(deps): bump pillow from 11.2.1 to 11.3.0 in /validator

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]

validator/requirements.txt

@@ -40,7 +40,7 @@ ortools==9.12.4544
 packaging==25.0
 pandas==2.2.3
 pathspec==0.12.1
-pillow==11.2.1
+pillow==11.3.0
 platformdirs==4.3.8
 pluggy==1.6.0
 protobuf==5.29.5