python3Packages.pytest-mockservers: disable failing test

The event_loop fixutre was deprecated in pytest-asyncio 0.22 and removed
in 1.0. Since pytest-mockservers propagates pytest-asyncio we must not
propagate anything but the default pytest-asyncio package.

pkgs/development/python-modules/pytest-mockservers/default.nix

@@ -46,6 +46,9 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
+  # relies on the removed event_loop fixture
+  disabledTests = [ "test_udp_server_factory" ];
+
   pythonImportsCheck = [ "pytest_mockservers" ];
 
   meta = with lib; {