Bump pillow from 9.3.0 to 10.2.0 in /docs/source

Bumps [pillow](https://github.com/python-pillow/Pillow) from 9.3.0 to 10.2.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@9.3.0...10.2.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

docs/source/requirements.txt

@@ -31,7 +31,7 @@ openpyxl==3.0.9
 packaging==21.3
 pandas==1.3.4
 pathlib2==2.3.6
-Pillow==9.3.0
+Pillow==10.2.0
 pip==21.3.1
 pluggy==1.0.0
 py==1.11.0