Chore(deps-dev): Update mypy requirement from <1.14 to <1.15

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v0.1.0...v1.14.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:development
...

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

setup.py

@@ -66,7 +66,7 @@ def read(path):
             'backports.zoneinfo<1; python_version<"3.9"',
             "certifi",
             "createcoverage>=1,<2",
-            "mypy<1.14",
+            "mypy<1.15",
             "poethepoet<0.32",
             "ruff<0.8",
             "stopit>=1.1.2,<2",