Bump pillow from 10.0.1 to 10.2.0 in /tests

Bumps [pillow](https://github.com/python-pillow/Pillow) from 10.0.1 to 10.2.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@10.0.1...10.2.0)

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

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

tests/requirements_frozen.txt

@@ -29,7 +29,7 @@ parso==0.8.1
 patsy==0.5.1
 pexpect==4.8.0
 pickleshare==0.7.5
-Pillow==10.0.1
+Pillow==10.2.0
 prompt-toolkit==3.0.16
 psutil==5.8.0
 ptyprocess==0.7.0