chore(deps): bump pillow in /tools/automatic_battery_tester

Bumps [pillow](https://github.com/python-pillow/Pillow) from 11.3.0 to 12.1.1.
- [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/11.3.0...12.1.1)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 12.1.1
  dependency-type: direct:production
...

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

tools/automatic_battery_tester/requirements.txt

@@ -14,7 +14,7 @@ numpy==2.3.1
 packaging==25.0
 pandas==2.3.0
 pfzy==0.3.4
-pillow==11.3.0
+pillow==12.1.1
 prompt_toolkit==3.0.51
 psutil==7.0.0
 pyparsing==3.2.3