FIX TST test_precomputed_nearest_neighbors_filtering[60] failure on CI (scikit-learn#31262)

Author: ogrisel

sklearn/cluster/tests/test_spectral.py

@@ -106,15 +106,15 @@ def test_precomputed_nearest_neighbors_filtering(global_random_seed):
     X, y = make_blobs(
         n_samples=250,
         random_state=global_random_seed,
-        centers=[[1, 1], [-1, -1]],
+        centers=[[1, 1, 1], [-1, -1, -1]],
         cluster_std=0.01,
     )
 
     n_neighbors = 2
     results = []
     for additional_neighbors in [0, 10]:
         nn = NearestNeighbors(n_neighbors=n_neighbors + additional_neighbors).fit(X)
-        graph = nn.kneighbors_graph(X, mode="connectivity")
+        graph = nn.kneighbors_graph(X, mode="distance")
         labels = (
             SpectralClustering(
                 random_state=global_random_seed,