Set asyncio_default_fixture_loop_scope to silence a bunch of warnings (#1668)

Not setting this is deprecated (see
pytest-dev/pytest-asyncio#924). We don't even
use async fixtures AFAICT so it doesn't impact us but it still emits a
lot of useless warnings

Author: Eijebong

api/pyproject.toml

@@ -108,10 +108,12 @@ requests = "*"
 [tool.poetry.group.tox.dependencies]
 tox = "*"
 
-
 [tool.poetry.group.dev.dependencies]
 flask-shell-ipython = "^0.5.1"
 
+[tool.pytest.ini_options]
+asyncio_default_fixture_loop_scope = "function"
+
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"