Bump pillow in /image_processing/src/image_processing

Bumps [pillow](https://github.com/python-pillow/Pillow) from 11.1.0 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@11.1.0...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]

image_processing/src/image_processing/requirements.txt

@@ -62,7 +62,7 @@ openai==1.63.2
 openpyxl==3.1.5
 packaging==24.2
 pandas==2.2.3
-pillow==11.1.0
+pillow==12.1.1
 portalocker==2.10.1
 preshed==3.0.9
 propcache==0.2.1