Bump black in /scripts in the pip group across 1 directory

Bumps the pip group with 1 update in the /scripts directory: [black](https://github.com/psf/black).


Updates `black` from 26.1.0 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@26.1.0...26.3.1)

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

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

Author: dependabot[bot]

scripts/requirements.txt

@@ -6,7 +6,7 @@ bandit==1.9.4
 safety==3.7.0
 
 # Development tools
-black==26.3.0
+black==26.3.1
 pylint==4.0.5
 
 # Runtime dependencies (if needed in future)