fix static analysis tests on 3.12

[jakkdl]

See #2646, fixes all of the errors in test_exports.py

Opened python/mypy#15330, didn't seem like there was a tracking issue for ast being deprecated.

Did ~zero research on why jedi is missing additional dunders, so somebody might want to check that out and/or open an issue upstream.

[codecov]

Codecov Report

Merging #2656 (31894ec) into master (8ae599c) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2656   +/-   ##
=======================================
  Coverage   98.14%   98.14%           
=======================================
  Files         118      118           
  Lines       16466    16473    +7     
  Branches     2974     2977    +3     
=======================================
+ Hits        16161    16168    +7     
  Misses        249      249           
  Partials       56       56           

Impacted Files	Coverage Δ
trio/socket.py	100.00% <ø> (ø)
trio/_path.py	100.00% <100.00%> (ø)
trio/_tests/test_exports.py	99.34% <100.00%> (+0.03%)	⬆️

[A5rocks]

Codecov seems like it's being skipped on 3.12 cause the pytest step is failing. We should put an if: always() or something on it.

[jakkdl]

Nice!

Future problem to figure out / prevent the timeouts