fix(deps): 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](https://github.com/python-pillow/Pillow/compare/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] <support@github.com>

requirements.txt

@@ -25,7 +25,7 @@ grpcio-status==1.71.0
 httplib2==0.22.0
 idna==3.10
 msgpack==1.1.0
-pillow==11.1.0
+pillow==11.2.1
 proto-plus==1.26.1
 protobuf==5.29.4
 pyasn1==0.6.1