[Bug] google colab and spleeter is incompatible.

there is multiple other reports about incompatibility caused by Python 3.10 era and numpy version.

here is my solution for google colab:

```
# Cell 1 — install condacolab (kernel will restart automatically)
!pip install -q condacolab
import condacolab
condacolab.install()

# Cell 2 — after kernel restarts, run this
!conda install -c conda-forge -y ffmpeg libsndfile python=3.10
!pip install "numpy<2" spleeter

# Cell 3 — test it
!wget -q https://github.com/deezer/spleeter/raw/master/audio_example.mp3
!python -m spleeter separate -p spleeter:2stems -o output audio_example.mp3
```

Reproduce the three installation and separation cells in Google Colab, including Python 3.10 and numpy<2, then compare the result with a current environment. Done means the supported Colab setup is documented or the incompatibility is resolved so the sample audio separates successfully.

Written by the indexing model from the issue text.