workflows: Force failing test

Author: ZoeLeibowitz

tests/test_gpu_common.py

@@ -243,6 +243,8 @@ def test_tasking_in_isolation(self, opt):
         assert str(body.body[1]) == 'sdata0[0].time = time;'
         assert str(body.body[2]) == 'sdata0[0].flag = 2;'
 
+        assert False, "Forced failure"
+
         op.apply(time_M=nt-2)
 
         assert np.all(u.data[nt-1] == 8)