Bump pillow from 10.2.0 to 10.3.0 in /api

Bumps [pillow](https://github.com/python-pillow/Pillow) from 10.2.0 to 10.3.0.
- [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/10.2.0...10.3.0)

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

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

api/requirements.txt

@@ -1,5 +1,5 @@
 Flask==3.0.0
-Pillow==10.2.0
+Pillow==10.3.0
 requests==2.31.0
 torch==2.1.0
 torchaudio==2.1.0