chore(deps): bump black from 25.11.0 to 26.3.1

Bumps [black](https://github.com/psf/black) from 25.11.0 to 26.3.1.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@25.11.0...26.3.1)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 26.3.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 appdirs==1.4.4
-black==25.11.0
+black==26.3.1
 configobj==5.0.9
 pillow==12.0.0
 pyinstaller==6.16.0