Switch to native traceback in cuml (#6078)

In cudf we have observed a ~10% speed up of pytest suite execution by switching pytest traceback to `--native`:

```
currently:

102474 passed, 2117 skipped, 902 xfailed in 892.16s (0:14:52)

--tb=short:

102474 passed, 2117 skipped, 902 xfailed in 898.99s (0:14:58)

--tb=no:

102474 passed, 2117 skipped, 902 xfailed in 815.98s (0:13:35)

--tb=native:

102474 passed, 2117 skipped, 902 xfailed in 820.92s (0:13:40)
```

This PR makes similar change to `cuml`.

xref: rapidsai/cudf#16851

Authors:
  - GALI PREM SAGAR (https://github.com/galipremsagar)
  - Dante Gama Dessavre (https://github.com/dantegd)
  - Divye Gala (https://github.com/divyegala)
  - Bradley Dice (https://github.com/bdice)

Approvers:
  - Divye Gala (https://github.com/divyegala)
  - Dante Gama Dessavre (https://github.com/dantegd)

URL: #6078

python/cuml/cuml/benchmark/automated/pytest.ini

@@ -4,7 +4,7 @@ addopts =
           --benchmark-warmup-iterations=1
           --benchmark-min-rounds=3
           --benchmark-columns="min, max, mean, stddev, outliers, gpu_mem, rounds"
-
+          --tb=native
 markers =
           managedmem_on: RMM managed memory enabled
           managedmem_off: RMM managed memory disabled

python/cuml/cuml/tests/pytest.ini

@@ -0,0 +1,5 @@
+# Copyright (c) 2024, NVIDIA CORPORATION.
+
+[pytest]
+addopts = --tb=native
+