Update pillow requirement from ==11.0.* to ==11.2.* in /server (#336)

Updates the requirements on [pillow](https://github.com/python-pillow/Pillow) to permit the latest version.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@11.0.0...11.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

server/requirements.txt

@@ -19,7 +19,7 @@ matplotlib==3.9.*
 numpy==2.0.*
 orjson==3.10.*
 openpyxl~=3.1.4
-Pillow==11.0.*
+Pillow==11.2.*
 pandas==2.2.*
 pdf2image==1.17.*
 pdfrw==0.4