[inductor] Update Triton CPU pin (#137778)

This incorporates the fix in
https://github.com/triton-lang/triton/pull/4871.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/137778
Approved by: https://github.com/Skylion007

.ci/docker/ci_commit_pins/triton-cpu.txt

@@ -1 +1 @@
-6a333f1b05671f6fada4ba7bbfae4a02a9d96f4f
+c7711371cace304afe265c1ffa906415ab82fc66

test/inductor/test_torchinductor.py

@@ -1487,7 +1487,6 @@ class CommonTemplate:
         actual = nested_opt(*example_inputs)
         self.assertEqual(expect, actual)
 
-    @xfail_if_triton_cpu
     def test_index_propagation_flip(self):
         def flip(x):
             i = torch.arange(x.size(0) - 1, -1, -1, device=x.device)
@@ -1669,7 +1668,6 @@ class CommonTemplate:
             vectorize=False,  # There's no loop to vectorize!
         )
 
-    @xfail_if_triton_cpu
     def test_computed_buffer_inlining(self):
         def flip(x):
             idx = torch.arange(x.size(0) - 1, -1, -1, device=x.device)
@@ -10786,7 +10784,6 @@ class CommonTemplate:
             self.common(fn, (inp,), check_lowp=False)
 
     @requires_gpu()
-    @xfail_if_triton_cpu
     @config.patch(implicit_fallbacks=True)
     def test_mutable_custom_op_fixed_layout2(self):
         with torch.library._scoped_library("mylib", "DEF") as lib:
@@ -11541,7 +11538,6 @@ class CommonTemplate:
 
         self.common(forward, ())
 
-    @xfail_if_triton_cpu
     def test_flip_cat(self):
         def forward(unsqueeze, unsqueeze_1):
             cat_1 = torch.ops.aten.cat.default([unsqueeze, unsqueeze_1], 1)