Bump pillow from 12.2.0 to 12.3.0 in /requirements

Bumps [pillow](https://github.com/python-pillow/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](https://github.com/python-pillow/Pillow/compare/12.2.0...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>

requirements/requirements.txt

@@ -24,7 +24,7 @@ moodlepy==0.24.1
 odfpy==1.4.1
 pandas==3.0.2
 parsel==1.11.0
-pillow==12.2.0
+pillow==12.3.0
 psycopg2-binary==2.9.12
 python-docx==1.2.0
 python-magic==0.4.27