⬆ Bump pillow from 11.1.0 to 11.2.1

Bumps [pillow](https://github.com/python-pillow/Pillow) from 11.1.0 to 11.2.1.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@11.1.0...11.2.1)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 11.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-docs.txt

@@ -7,7 +7,7 @@ pyyaml >=5.3.1,<7.0.0
 # For Material for MkDocs, Chinese search
 # jieba==0.42.1
 # For image processing by Material for MkDocs
-pillow==11.1.0
+pillow==11.2.1
 # For image processing by Material for MkDocs
 cairosvg==2.7.1
 # mkdocstrings[python]==0.25.1