Update mypy requirement from <1.18 to <1.19

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...v1.18.2)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.18.2
  dependency-type: direct:development
...

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

Author: dependabot[bot]

setup.py

@@ -72,7 +72,7 @@
             "black<26",
             "flake8<7.3",
             "isort<6",
-            "mypy<1.18",
+            "mypy<1.19",
         ],
     },
     python_requires=">=3.9",