Add scipy skip for a test (#10502)

This PR skips `scipy` related code-path that pandas takes. This isn't a failure in CI, but cudf dev env doesn't require having a `scipy` package, hence adding an `importorskip`.

Authors:
  - GALI PREM SAGAR (https://github.com/galipremsagar)

Approvers:
  - Vyas Ramasubramani (https://github.com/vyasr)
  - Ashwin Srinath (https://github.com/shwina)

URL: #10502

python/cudf/cudf/tests/test_stats.py

@@ -423,6 +423,10 @@ def test_cov1d(data1, data2):
 )
 @pytest.mark.parametrize("method", ["spearman", "pearson"])
 def test_corr1d(data1, data2, method):
+    if method == "spearman":
+        # Pandas uses scipy.stats.spearmanr code-path
+        pytest.importorskip("scipy")
+
     gs1 = cudf.Series(data1)
     gs2 = cudf.Series(data2)