Arm backend: Fix torchtune NF4Tensor import

[bdemirb]

CommitlyExtended fails while importing torchtune.modules.common_utils because the currently pinned torchtune revision imports NF4Tensor from torchao.quantization.

Bump torchtune to a revision that imports NF4Tensor from torchao.dtypes.nf4tensor, matching the torchao package installed in CI.

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils @Sebastian-Larsson @robell @rascani

[pytorch-bot]

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❌ 7 New Failures, 3 Pending

As of commit 0833668 with merge base 6683757 ():

NEW FAILURES - The following jobs have failed:

• pull / test-models-linux (llama3_2_vision_encoder, portable, linux.4xlarge.memory) / linux-job (gh)
  RuntimeError: Command docker exec -t 65a891a196c3b3eb66359a0df74c554d217cb66e4d0f2701205da817b868c09f /exec failed with exit code 1
• pull / test-models-linux (phi_4_mini, portable, linux.4xlarge.memory) / linux-job (gh)
  RuntimeError: Command docker exec -t e26b248e6c8bc4dad0d3fbda9207edb197b6030e157805c80465538f7b7bc13d /exec failed with exit code 1
• pull / test-qnn-passes-linux / linux-job (gh)
  backends/qualcomm/tests/test_passes.py::TestPasses::test_mha_to_sha
• pull / unittest / linux / linux-job (gh)
  RuntimeError: Command docker exec -t ad8c63cb548b469e653a04e4fbea8307b1f93bacd9c9be7b903d9e710e7da598 /exec failed with exit code 1
• pull / unittest / macos / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• pull / unittest-editable / linux / linux-job (gh)
  RuntimeError: Command docker exec -t d74c43c03da6974233ff894466dc0846ef2ae388d3faf41b4cbd50756e8f28bb /exec failed with exit code 1
• pull / unittest-editable / macos / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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[bdemirb]

@pytorchbot label "partner: arm"

[bdemirb]

@pytorchbot label "release notes: arm"

[Sebastian-Larsson]

@digantdesai please take a look at this one since it touches a file outside of our backend.