fix test_digitize_error (#2204)

```python
with pytest.raises(TypeError):
    dpnp.digitize(x_np, bins_dp)
    dpnp.digitize(x_dp, bins_np)  # <= unreachable line
```

```python
with pytest.raises(TypeError):
    dpnp.digitize(x_np, bins_dp)
with pytest.raises(TypeError):
    dpnp.digitize(x_dp, bins_np)  # <= reachable line
```

- [x] Have you provided a meaningful PR description?
- [x] Have you added a test, reproducer or referred to issue with a
reproducer?
- [x] Have you tested your changes locally for CPU and GPU devices?
- [x] Have you made sure that new changes do not introduce compiler
warnings?
- [x] Have you checked performance impact of proposed changes?
- [x] If this PR is a work in progress, are you filing the PR as a
draft?

dpnp/tests/test_histogram.py

@@ -113,6 +113,7 @@ def test_digitize_error(self):
         bins_np = dpnp.asnumpy(bins_dp)
         with pytest.raises(TypeError):
             dpnp.digitize(x_np, bins_dp)
+        with pytest.raises(TypeError):
             dpnp.digitize(x_dp, bins_np)
 
         # bins ndim < 1