Bump pillow from 9.0.1 to 10.2.0 in /docs

Bumps [pillow](https://github.com/python-pillow/Pillow) from 9.0.1 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@9.0.1...10.2.0)

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

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

Author: dependabot[bot]

docs/requirements.txt

@@ -13,7 +13,7 @@ livereload==2.6.1
 MarkupSafe==1.1.1
 packaging==19.2
 pathtools==0.1.2
-Pillow==9.0.1
+Pillow==10.2.0
 port-for==0.3.1
 Pygments==2.15.0
 pyparsing==2.4.5