Fix a slow test.
Author: Narsil
Pull request: yes

# What does this PR do?

Fixes the test

```bash
RUN_SLOW=1 RUN_PIPELINE_TESTS=1 pytest -sv tests/test_pipelines_audio_classification.py::Audi
oClassificationPipelineTests::test_large_model_pt
```

Fails on `torch==1.10.0+cu113`. Given the small differences of results I assume this is of no consequence.

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Fixes # (issue)


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