Bump pillow from 9.1.1 to 10.3.0 in /.devcontainer

Bumps [pillow](https://github.com/python-pillow/Pillow) from 9.1.1 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/9.1.1...10.3.0)

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

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

.devcontainer/requirements.txt

@@ -5,7 +5,7 @@ imageio==2.16.2
 keras==2.8.0
 nltk==3.6.6
 pandas==1.4.2
-pillow==10.0.1
+pillow==10.3.0
 pygame==2.1.2
 scikit-image==0.19.2
 seaborn==0.11.2