fix: Update mypy python version to 3.12

[alisonlhart]

Fixes mypy linting issue:

mypy.....................................................................Failed
- hook id: mypy
- exit code: 2

/home/runner/.cache/pre-commit/reposq9uwjmh/py_env-python3.13/lib/python3.13/site-packages/ansible/template/__init__.py:363: error: Type parameter lists are only supported in Python 3.12 and greater  [syntax]

Also skips strict tombi-lint checking temporarily (see issue).