[CI] xfail the test_wuerstchen_prior test (#12530)

xfail the test_wuerstchen_prior test

tests/pipelines/stable_cascade/test_stable_cascade_prior.py

@@ -17,11 +17,13 @@ import gc
 import unittest
 
 import numpy as np
+import pytest
 import torch
 from transformers import CLIPTextConfig, CLIPTextModelWithProjection, CLIPTokenizer
 
 from diffusers import DDPMWuerstchenScheduler, StableCascadePriorPipeline
 from diffusers.models import StableCascadeUNet
+from diffusers.utils import is_transformers_version
 from diffusers.utils.import_utils import is_peft_available
 
 from ...testing_utils import (
@@ -154,6 +156,11 @@ class StableCascadePriorPipelineFastTests(PipelineTesterMixin, unittest.TestCase
         }
         return inputs
 
+    @pytest.mark.xfail(
+        condition=is_transformers_version(">=", "4.57.1"),
+        reason="Test fails with the latest transformers version",
+        strict=False,
+    )
     def test_wuerstchen_prior(self):
         device = "cpu"