Add Python 3.13, 3.14, and PyPy 3.11 to the testing

[cclauss]

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[cclauss]

PyPy 3.11 fails only on Windows. :-(

[kuzeyron]

sock_3000 = server_3000.listen(address='0.0.0.0', port=3000, default=True) maybe use a random integer in the test for the port? Seems like the port is already in use.

[cclauss]

Please look at the pytest warnings on Py13 or Py14.

The DeprecationWarning: co_lnotab is deprecated, use co_lines instead. warnings should disappear in the next release of coveragepy.

The thread crashes are of more concern, and that might be what is keeping ports open. Let's add Py3.14t to the testing.

Also, let's test on pull_request and not just push.