Bump pillow from 11.3.0 to 12.2.0 in /sample-py-app

Bumps [pillow](https://github.com/python-pillow/Pillow) from 11.3.0 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@11.3.0...12.2.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

sample-py-app/requirements.txt

@@ -48,7 +48,7 @@ Paste==3.10.1
 perf==0.1
 pexpect==4.9.0
 pid==3.0.4
-pillow==11.3.0
+pillow==12.2.0
 ply==3.11
 productmd==1.50
 psutil==7.0.0