Fix mypy compatibility with Python 3.14 #300
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Update mypy from v0.900 (2021) to v1.18.2 (2025) to fix CI failures on Python 3.14. The old version fails with 'The typed_ast package is not installed' error because typed_ast is incompatible with Python 3.14. GitHub Actions recently started defaulting to Python 3.14 for the check workflow, causing intermittent CI failures. Tested with Docker python:3.14 image to confirm the fix works.
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#298
Update mypy from v0.900 (2021) to v1.18.2 (2025) to fix CI failures on Python 3.14.
The old version fails with 'The typed_ast package is not installed' error because typed_ast is incompatible with Python 3.14. GitHub Actions recently started defaulting to Python 3.14 for the check workflow, causing intermittent CI failures.
Tested with Docker python:3.14 image to confirm the fix works.