chore(deps): update dependency mypy to v1.19.1

Author: renovate[bot]

pyproject.toml

@@ -19,7 +19,7 @@ dependencies = [
     # Python development
     "black==25.1.0",
     "flake8==7.2.0",
-    "mypy==1.15.0",
+    "mypy==1.19.1",
     "pytest==8.3.5",
     "ipython==9.1.0",
     # C/Go development helpers