Update torchao pin to v0.15.0 in main branch

[mergennachin]

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[pytorch-bot]

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❌ 6 New Failures, 10 Unrelated Failures

As of commit c3fcfb8 with merge base a20cb0d ():

NEW FAILURES - The following jobs have failed:

• Apple / build-demo-ios / macos-job (gh)
  RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 65
• Copilot code review / Agent (gh)
  Process completed with exit code 1.
• pull / test-samsung-quantmodels-linux / linux-job (gh)
  RuntimeError: Command docker exec -t a4c9706cc24836b164d25455c292fe6a0c47b5a07b84176499a56d87daca1abe /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (mistralai, Voxtral-Mini-3B-2507, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t e95cc815978bb5367f2966a1d8a62922300cefb038d3245c99b408a882ccc508 /exec failed with exit code 1
• Test Metal Backend / test-model-metal-e2e (openai, whisper-large-v3-turbo, non-quantized) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• trunk / test-mcu-cortex-m-backend / linux-job (gh)
  RuntimeError: Command docker exec -t 67bf518d6b832ee64e2bef6dfa265c0acb1033f646ae0bda9960c3e6303956c7 /exec failed with exit code 1

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• Test Metal Backend / test-model-metal-e2e (mistralai, Voxtral-Mini-3B-2507, non-quantized) / macos-job (gh) (matched macos rule in flaky-rules.json)
  File doesn't exist

BROKEN TRUNK - The following jobs failed but was present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / linux / linux-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance
• pull / unittest / macos / macos-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance
• pull / unittest / windows / windows-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance
• pull / unittest-editable / linux / linux-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance
• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance
• trunk / unittest-release / linux / linux-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance
• trunk / unittest-release / macos / macos-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance
• trunk / unittest-release / windows / windows-job (gh) (trunk failure)
  devtools/inspector/tests/inspector_test.py::TestInspector::test_transformer_block_xnnpack_numeric_gap_within_tolerance

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[Copilot]

Pull request overview

This PR updates the pinned version of the torchao submodule from commit 08e5e203f1074a1663fe8293e184b252ea359f99 to commit 9338966da58ec44b60f0e0b173cabab08f942ed0, which corresponds to version v0.15.0.

Changes:

• Updated torchao submodule reference to v0.15.0

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