tests: suppress unhandled thread exception warning

HTTPretty handling of thread exception is incomplete, causing issues
for test runs. This change works around the issue by ignoring the
relevant warnings.

tests/console/commands/test_publish.py

 from pathlib import Path
 
+import pytest
 import requests
 
 from poetry.publishing.uploader import UploadError
@@ -27,6 +28,7 @@ Publishing simple-project (1.2.3) to PyPI
     assert expected_error_output in app_tester.io.fetch_error()
 
 
+@pytest.mark.filterwarnings("ignore::pytest.PytestUnhandledThreadExceptionWarning")
 def test_publish_returns_non_zero_code_for_connection_errors(app, app_tester, http):
     def request_callback(*_, **__):
         raise requests.ConnectionError()

tests/utils/test_authenticator.py

@@ -168,6 +168,7 @@ def test_authenticator_falls_back_to_keyring_netloc(
     assert "Basic OmJhcg==" == request.headers["Authorization"]
 
 
+@pytest.mark.filterwarnings("ignore::pytest.PytestUnhandledThreadExceptionWarning")
 def test_authenticator_request_retries_on_exception(mocker, config, http):
     sleep = mocker.patch("time.sleep")
     sdist_uri = "https://foo.bar/files/{}/foo-0.1.0.tar.gz".format(str(uuid.uuid4()))
@@ -188,6 +189,7 @@ def test_authenticator_request_retries_on_exception(mocker, config, http):
     assert sleep.call_count == 2
 
 
+@pytest.mark.filterwarnings("ignore::pytest.PytestUnhandledThreadExceptionWarning")
 def test_authenticator_request_raises_exception_when_attempts_exhausted(
     mocker, config, http
 ):