Bump black from 26.1.0 to 26.3.1

Bumps [black](https://github.com/psf/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](https://github.com/psf/black/compare/26.1.0...26.3.1)

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

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

pyproject.toml

@@ -87,7 +87,7 @@ wheel = ">=0.46.2"
 
 [tool.poetry.group.dev.dependencies]
 bandit = "*"
-black = "^26.1.0"
+black = "^26.3.1"
 cyclonedx-python-lib = "^11.6.0"
 cloudfoundry-client = "*"
 exceptiongroup = "==1.3.1"