fix(rnnoise): constrain audiolab to the supported Graph API

[BSPLAZA]

Please describe the changes in your PR. If it is addressing an issue, please reference that as well.

Fixes #5849.

RNNoiseFilter crashes on the first audio chunk with TypeError: Graph.__init__() got an unexpected keyword argument 'rate'. pyrnnoise 0.4.3 calls Graph(rate=...), but audiolab 0.5.2 renamed that argument to sample_rate.

Cap audiolab<0.5.2 in the rnnoise extra and regenerate the lockfile. Enable the extra in test and coverage CI so the existing RNNoise tests run instead of being skipped.

Validation:

• macOS / Python 3.12: 3 RNNoise failures before; all 16 RNNoise and SOXR tests pass with the fix.
• Debian / Python 3.12, using the CI extras: 6,010 passed, 121 skipped. All six RNNoise tests ran.
• A fresh wheel install resolves audiolab 0.5.1 and processes synthetic audio at 8, 16 and 48 kHz.

uv sync --locked --group dev --extra rnnoise
uv run pytest tests/test_rnnoise_filter.py tests/test_rnnoise_resampling.py tests/test_rnnoise_cancellation.py tests/test_soxr_resamplers.py -q