False negatives with Python3.13

[samueljsb]

I am seeing lines that were previously flagged as violating rules not being reported when fixit is run with Python3.13.

# t.py
x = None
isinstance(x, str) or isinstance(x, int)

$ python --version --version
Python 3.13.0rc1 (v3.13.0rc1:e4a3e786a5e, Jul 31 2024, 19:49:53) [Clang 15.0.0 (clang-1500.3.9.4)]

$ fixit --version
fixit, version 2.1.0

$ fixit --rules fixit.rules:CollapseIsinstanceChecks lint t.py
🧼 1 file clean 🧼

When installed with python3.12 or earlier, this reports a violation of the rule:

$ python --version --version
Python 3.12.0 (v3.12.0:0fb18b02c8, Oct  2 2023, 09:45:56) [Clang 13.0.0 (clang-1300.0.29.30)]

$ fixit --version
fixit, version 2.1.0

$ fixit --rules fixit.rules:CollapseIsinstanceChecks lint t.py
t.py@3:0 CollapseIsinstanceChecks: Multiple isinstance calls with the same target but different types can be collapsed into a single call with a tuple of types. (has autofix)
🛠️  1 file checked, 1 file with errors, 1 auto-fix available 🛠️

I haven't checked any other rules, but am happy to do so if that would be helpful.