[Bug] Unable to succesfully run pip install spleeter

- [ ] I didn't find a similar issue already open.
- [ ] I read the documentation (README AND Wiki)
- [ ] I have installed FFMpeg
- [ ] My problem is related to Spleeter only, not a derivative product (such as Webapplication, or GUI provided by others)

## Description

I think the new update 4 days ago related to compatible versions has caused some issue because previously the same code was working fine and giving output however now it is showing me numpy version error.

## Step to reproduce

1. Running on colab.
2. Installed using `!pip install spleeter`
3. Got error:
"Collecting spleeter
Using cached spleeter-2.1.0-py3-none-any.whl.metadata (10 kB)
Collecting ffmpeg-python==0.2.0 (from spleeter)
Using cached ffmpeg_python-0.2.0-py3-none-any.whl.metadata (1.7 kB)
Collecting httpx<0.17.0,>=0.16.1 (from httpx[http2]<0.17.0,>=0.16.1->spleeter)
Using cached httpx-0.16.1-py3-none-any.whl.metadata (38 kB)
Collecting librosa==0.8.0 (from spleeter)
Using cached librosa-0.8.0.tar.gz (183 kB)
Preparing metadata (setup.py) ... done
Collecting norbert==0.2.1 (from spleeter)
Using cached norbert-0.2.1-py2.py3-none-any.whl.metadata (3.8 kB)
Collecting numpy<1.19.0,>=1.16.0 (from spleeter)
Using cached numpy-1.18.5.zip (5.4 MB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
error: subprocess-exited-with-error

× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.
Preparing metadata (pyproject.toml) ... error
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details."

## Output
previously this command would run perfectly fine and install spleeter.

## Environment

| | |
| ----------------- | ------------------------------- |
| OS | Windows 11|
| Installation type | pip |
| RAM available | 12.7 GB |
| Hardware spec | GPU / CPU both |