[numpy] Replace references to np.trapz with np.trapezoid.

np.trapz is removed in NumPy 2.4.

PiperOrigin-RevId: 840475664

Author: hawkinsp

tensorflow_probability/python/experimental/distributions/importance_resample_test.py

@@ -275,7 +275,7 @@ def test_log_prob_independence_per_x(self):
     xs = np.linspace(0, 1.6, 100)
     aucs = []
     for s in samplers.split_seed(seed, n=30):
-      aucs.append(np.trapz(
+      aucs.append(np.trapezoid(
           self.evaluate(dist.prob(xs, seed=s, sample_size=100)), xs))
 
     self.assertAllClose(aucs, np.ones_like(aucs), atol=.05)

tensorflow_probability/python/math/integration_test.py

@@ -169,7 +169,7 @@ def test_against_numpy(self, data):
       x = data.draw(
           tfp_hps.constrained_tensors(tfp_hps.identity_fn, shp, dtype))
       dx = None
-    np_soln = np.trapz(
+    np_soln = np.trapezoid(
         self.evaluate(y),
         x=self.evaluate(x) if x is not None else None,  # cannot evaluate(None)
         dx=dx or 1.0,  # numpy default is 1.0