Python 3.14: AttributeError: module 'ast' has no attribute 'Str'

[hugovk]

ast.Str was deprecated in Python 3.8 and removed in the upcoming 3.14:

https://docs.python.org/3.14/whatsnew/3.14.html#id10

❯ python3.14 --version
Python 3.14.0rc2

❯ deadcode .
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.14/bin/deadcode", line 10, in <module>
    sys.exit(print_main())
             ~~~~~~~~~~^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/cli.py", line 41, in print_main
    if result := main():
                 ~~~~^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/cli.py", line 26, in main
    unused_names = find_unused_names(filenames=filenames, args=args)
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/actions/find_unused_names.py", line 13, in find_unused_names
    dead_code_visitor.visit_abstract_syntax_trees()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/visitor/dead_code_visitor.py", line 106, in visit_abstract_syntax_trees
    self.visit(node)
    ~~~~~~~~~~^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/visitor/dead_code_visitor.py", line 503, in visit
    self.visit(item)
    ~~~~~~~~~~^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/visitor/dead_code_visitor.py", line 503, in visit
    self.visit(item)
    ~~~~~~~~~~^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/visitor/dead_code_visitor.py", line 503, in visit
    self.visit(item)
    ~~~~~~~~~~^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/visitor/dead_code_visitor.py", line 505, in visit
    self.visit(value)
    ~~~~~~~~~~^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/visitor/dead_code_visitor.py", line 469, in visit
    visitor(node)
    ~~~~~~~^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.14/lib/python3.14/site-packages/deadcode/visitor/dead_code_visitor.py", line 326, in visit_Call
    and isinstance(node.func.value, ast.Str)
                                    ^^^^^^^
AttributeError: module 'ast' has no attribute 'Str'

[hugovk]

Please see #27.