build(deps): bump pillow from 11.3.0 to 12.1.1

Bumps [pillow](https://github.com/python-pillow/Pillow) from 11.3.0 to 12.1.1.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@11.3.0...12.1.1)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 12.1.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -24,7 +24,7 @@ classifiers = [
 
 # Core dependencies (consolidated from requirements.txt)
 dependencies = [
-    "Pillow==11.3.0",
+    "Pillow==12.1.1",
     "lxml==5.2.1",
     "psycopg2==2.9.9",
     "Django==5.2.12",