Configure mypy to explicitly target Python 3.14

Agent-Logs-Url: https://github.com/TheAlgorithms/Python/sessions/f7f0f3f6-87d5-46e5-a215-573aa8d54b2b

Co-authored-by: cclauss <3709715+cclauss@users.noreply.github.com>

Author: Copilot

pyproject.toml

@@ -185,6 +185,9 @@ report.sort = "Cover"
 [tool.mypy]
 python_version = "3.14"
 
+[tool.mypy]
+python_version = "3.14"
+
 [tool.sphinx-pyproject]
 copyright = "2014, TheAlgorithms"
 autoapi_dirs = [