Relax tolerance in autocorr test

pandas-dev/pandas#61154 changed the behavior of pandas'
correleation methods for series whose `r` is close to -1 or 1.

This updates our test to adapt to that change by increasing the tolerance
we consider equal.

Author: TomAugspurger

dask/dataframe/dask_expr/tests/test_reductions.py

@@ -353,7 +353,7 @@ def test_cov_corr(df, pdf):
 
     assert_eq(df.x.cov(df.y), pdf.x.cov(pdf.y))
     assert_eq(df.x.corr(df.y), pdf.x.corr(pdf.y))
-    assert_eq(df.x.autocorr(lag=1), pdf.x.autocorr(lag=1))
+    assert_eq(df.x.autocorr(lag=1), pdf.x.autocorr(lag=1), atol=1e-3)
 
 
 def test_reduction_on_empty_df():

dask/dataframe/utils.py

@@ -578,7 +578,7 @@ def assert_eq(
             if np.isnan(a):
                 assert np.isnan(b)
             else:
-                assert np.allclose(a, b)
+                assert np.allclose(a, b, **kwargs)
     return True