fix (CI): Use psutil.AccessDenied rather than the base class psutil.Error when mocking

Author: chrisburr

src/DIRAC/FrameworkSystem/Agent/test/Test_ComponentSupervisionAgent.py

@@ -446,7 +446,7 @@ def test_restartInstance(self):
         psMock = self.getPSMock()
         psMock.Process = MagicMock("RaisingProc")
         psMock.Error = psutil.Error
-        psMock.Process.side_effect = psutil.Error()
+        psMock.Process.side_effect = psutil.AccessDenied()
         with patch("DIRAC.FrameworkSystem.Agent.ComponentSupervisionAgent.psutil", new=psMock):
             res = self.restartAgent.restartInstance(12345, "agentX", True)
         self.assertFalse(res["OK"])