chore(deps-dev): bump mypy from 2.3.0 to 2.3.1

Bumps [mypy](https://github.com/python/mypy) from 2.3.0 to 2.3.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v2.3.0...v2.3.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 2.3.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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==26.5.1", "build", "mypy==2.3.0", "pytest>=7.0", "pytest-cov", "pytest-subtests",
+test = ["black==26.5.1", "build", "mypy==2.3.1", "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]