Update PyTorch upstream pin (#1897)

Closes #1840

CI on PyTorch main status with noop IPEX:
https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/10422253663

For rolling there is the following error (10 tutorial):
* `AttributeError: module 'torch.xpu' has no attribute
'set_fp32_math_mode'` (should be fixed by
#1860)

For LTS:
* `Failed to create Level Zero tracer: 2013265921`
(instrumentation/test_gpuhello.py)

Signed-off-by: Anatoly Myachev <[email protected]>

.github/pins/pytorch-upstream.txt

@@ -1 +1 @@
-14ab5b50591e6a8917d32ad83217e290d0a4da85
+7666ef9d9b0b3f581a4c5572fe0416ba5f5a877c