[Bug] protobuf incompatibility

- [ ✅] 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'm trying to build a streamlit web application with library version 1.39.0 which it requires protobuf<6,>=3.20 but latest spleeter version which i installed from github using `pip install git+https://github.com/deezer/spleeter` requires protobuf<3.20,>=3.9.2
Can you consider adapting spleeter to newer versions of protobuf so i could easily use it?

## Step to reproduce

1. Installed using `pip install git+https://github.com/deezer/spleeter`
2. Run as `user`
3. Got `streamlit 1.39.0 requires protobuf<6,>=3.20, but you have protobuf 3.19.6 which is incompatible.` error

## Environment

| | |
| ----------------- | ------------------------------- |
| OS | Windows 11 |
| Python | 3.10.15 |
| Installation type | pip install git+https://github.com/deezer/spleeter |
| RAM available | 16GB |
| Hardware spec | 12gen intel corei9 with 14 cores |