Usage of deprecated ast nodes (breaks with python3.14)

[kasium]

ast.Str, ast.Num, ast.NameConstant and some others are deprecated and will be removed in python 3.14

flake8-simplify/flake8_simplify/constants.py

Line 4 in 4f1b89f

# ast.Constant in Python 3.8, ast.NameConstant in Python 3.6 and 3.7

[kasium]

@MartinThoma flake8-simplify is not compatible with python 3.14.

venv314/lib/python3.14/site-packages/flake8_simplify/__init__.py:9: in <module>
    from flake8_simplify.rules.ast_bool_op import (
venv314/lib/python3.14/site-packages/flake8_simplify/rules/ast_bool_op.py:7: in <module>
    from flake8_simplify.constants import BOOL_CONST_TYPES
venv314/lib/python3.14/site-packages/flake8_simplify/constants.py:5: in <module>
    BOOL_CONST_TYPES = (ast.Constant, ast.NameConstant)
E   AttributeError: module 'ast' has no attribute 'NameConstant'