Bump pillow from 12.1.1 to 12.2.0 in /server (#398)

Bumps [pillow](https://github.com/python-pillow/Pillow) from 12.1.1 to 12.2.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@12.1.1...12.2.0)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 12.2.0
  dependency-type: direct:production
...

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Author: dependabot[bot]

server/pyproject.toml

@@ -60,7 +60,7 @@ dependencies = [
   "urllib3<2.7",
   "girder-slicer-cli-web>=1.3.5",
   "pycocotools>=2.0.8",
-  "pillow>=11.3.0",
+  "pillow>=12.2.0",
   "numpy>=1.21.4",
   "pandas>=2.3.2",
 ]