ResourceWarnings in test_reconnects_are_stable

[jaraco]

irc/tests/test_bot.py::TestBot::test_reconnects_are_stable
  /Users/jaraco/code/jaraco/irc/irc/tests/test_bot.py:139: ResourceWarning: unclosed <socket.socket fd=12, family=2, type=1, proto=0, laddr=('127.0.0.1', 54781)>
    bot.reactor.process_once()
  Enable tracemalloc to get traceback where the object was allocated.
  See https://docs.pytest.org/en/stable/how-to/capture-warnings.html#resource-warnings for more info.

irc/tests/test_bot.py::TestBot::test_reconnects_are_stable
  /Users/jaraco/code/jaraco/irc/irc/tests/test_bot.py:139: ResourceWarning: unclosed <socket.socket fd=12, family=2, type=1, proto=0, laddr=('127.0.0.1', 54782)>
    bot.reactor.process_once()
  Enable tracemalloc to get traceback where the object was allocated.
  See https://docs.pytest.org/en/stable/how-to/capture-warnings.html#resource-warnings for more info.

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html