build(deps): bump pillow from 10.4.0 to 12.3.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 10.4.0 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@10.4.0...12.3.0)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 12.3.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -15,7 +15,7 @@ djangorestframework = "^3.15.2"
 djangorestframework-simplejwt = "^5.3.1"
 gunicorn = "^23.0.0"
 markdown2 = {extras = ["all"], version = "^2.5.1"}
-pillow = "^11.0.0"
+pillow = ">=11,<13"
 psycopg2-binary = "^2.9.10"
 python-dotenv = "^1.0.1"
 django-filter = "^24.3"