Remove unnecessary usage of numpy dtypes to prevent throwing error

Author: marthacryan

packages/python/plotly/_plotly_utils/tests/validators/test_string_validator.py

@@ -151,7 +151,7 @@ def test_acceptance_aok_list(val, validator_aok):
 # Numpy v2 has a StrDType but we don't want to convert it yet.
 # Change this test if you add support for it.
 def test_aok_base64_array(validator_aok):
-    val = b64(np.array(["a", "b", "c"], dtype=np.dtypes.StrDType))
+    val = b64(np.array(["a", "b", "c"]))
     coerce_val = validator_aok.validate_coerce(val)
     assert coerce_val[0] == "a"
     assert coerce_val[1] == "b"