chore(deps-dev): bump black from 24.10 to 26.3.1

Bumps [black](https://github.com/psf/black) from 24.10 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@24.10.0...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>

Author: dependabot[bot]

pyproject.toml

@@ -33,7 +33,7 @@ classifiers = [
 repository = "https://github.com/tableau/server-client-python"
 
 [project.optional-dependencies]
-test = ["black==24.10", "build", "mypy==1.4", "pytest>=7.0", "pytest-cov", "pytest-subtests",
+test = ["black==26.3.1", "build", "mypy==1.4", "pytest>=7.0", "pytest-cov", "pytest-subtests",
     "pytest-xdist", "requests-mock>=1.0,<2.0", "types-requests>=2.32.4.20250913"]
 
 [tool.setuptools.package-data]