python3Packages.aiomultiprocess: disable failing tests

These tests fail from time to time and bring the whole test suite to a
timeout.

https://github.com/omnilib/aiomultiprocess/issues/97
(cherry picked from commit c8261a34f80d67223589a498bc0acd4713ab21b3)

pkgs/development/python-modules/aiomultiprocess/default.nix

@@ -24,6 +24,14 @@ buildPythonPackage rec {
   checkInputs = [ pytestCheckHook ];
 
   pytestFlagsArray = [ "aiomultiprocess/tests/*.py" ];
+
+  disabledTests = [
+    # tests are flaky and make the whole test suite time out
+    "test_pool_worker_exceptions"
+    "test_pool_worker_max_tasks"
+    "test_pool_worker_stop"
+  ];
+
   pythonImportsCheck = [ "aiomultiprocess" ];
 
   meta = with lib; {