relax the test criteria

Author: refraction-ray

tests/test_dmcircuit.py

@@ -498,7 +498,7 @@ def test_dm_sexpps(backend):
     ye = c.expectation_ps(x=[1], y=[0], z=[2, 3])
     np.testing.assert_allclose(ye, y, atol=1e-5)
     y2 = c.sample_expectation_ps(x=[1], y=[0], z=[2, 3], shots=81920)
-    assert np.abs(y2 - y) < 0.01
+    assert np.abs(y2 - y) < 0.015
 
 
 def test_dm_sexpps_jittable_vamppable(jaxb):