[CI][Bugfix] Pin triton version for CPU (#16384)

Signed-off-by: Roger Wang <[email protected]>

Author: ywang96

requirements/cpu.txt

@@ -15,3 +15,6 @@ torchaudio==2.6.0; platform_machine == "ppc64le"
 torchvision; platform_machine != "ppc64le"  and platform_machine != "s390x"
 torchvision==0.21.0; platform_machine == "ppc64le"
 datasets # for benchmark scripts
+
+# cpu cannot use triton 3.3.0
+triton==3.2.0