Chore(deps-dev): Update mypy requirement from <1.15 to <1.16

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...v1.15.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

setup.py

@@ -67,7 +67,7 @@ def read(path):
             'backports.zoneinfo<1; python_version<"3.9"',
             "certifi",
             "createcoverage>=1,<2",
-            "mypy<1.15",
+            "mypy<1.16",
             "poethepoet<0.33",
             "ruff<0.10",
             "stopit>=1.1.2,<2",