fix benchmark failure with numpy 1.20+ (#39795)

Author: simonjayhawkins

asv_bench/benchmarks/series_methods.py

@@ -2,6 +2,8 @@
 
 import numpy as np
 
+from pandas.compat.numpy import np_version_under1p20
+
 from pandas import Categorical, NaT, Series, date_range
 
 from .pandas_vb_common import tm
@@ -143,6 +145,10 @@ class IsInLongSeriesLookUpDominates:
 
     def setup(self, dtype, MaxNumber, series_type):
         N = 10 ** 7
+
+        if not np_version_under1p20 and dtype in ("Int64", "Float64"):
+            raise NotImplementedError
+
         if series_type == "random_hits":
             np.random.seed(42)
             array = np.random.randint(0, MaxNumber, N)