Bump pillow from 10.3.0 to 10.4.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 10.3.0 to 10.4.0.
- [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/10.3.0...10.4.0)

---
updated-dependencies:
- dependency-name: pillow
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -13,7 +13,7 @@ bleach==6.0.0
 gunicorn==22.0.0
 lxml==5.1.0
 Markdown==3.5.1
-Pillow==10.3.0
+Pillow==10.4.0
 psycopg2-binary==2.9.9
 python-dotenv==1.0.0
 requests==2.32.0