Force urllib3 > 2.0 for python 3.9 in the tests

...or gzipped HTTP requests will fail

Signed-off-by: Aurélien Bompard <aurelien@bompard.org>

tox.ini

@@ -14,6 +14,7 @@ deps =
     poetry-plugin-export
 commands_pre =
     poetry install
+    py39-unittest: poetry run pip install --upgrade "urllib3>=2.0"
 commands =
     unittest: poetry run pytest -vv --cov --cov-append --cov-report term-missing --cov-report= tests/unit {posargs}
     integration: poetry run pytest -vv --no-cov tests/integration {posargs}