Latest version of Bertopic incompatible with latest version of River

In the Bertopic page about online modelling, the docs [recommend using River](https://maartengr.github.io/BERTopic/getting_started/online/online.html#river)

But when I try to install both
pip install bertopic
pip install river

I get the following conflict messages:
```
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
river 0.19.0 requires **numpy>=1.25.2**, but you have numpy 1.24.4 which is incompatible.
```
```
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
numba 0.57.1 requires **numpy<1.25**,>=1.21, but you have numpy 1.25.2 which is incompatible.
```

(emphasis added)

numba doesn't seem to be a direct dependency of Bertopic, but I'm confident Bertopic is importing it somewhere, since River installs fine if I uninstall Bertopic first

As a quick assist, it would be helpful if you could say which version of River you used to make the example in the linked docs work.

Thanks :)

Start with the linked online modelling documentation's River section and reproduce the two pip installation commands to confirm the numpy, numba, and River conflict. Done means identifying a compatible version combination and correcting the documented recommendation or installation guidance.

Written by the indexing model from the issue text.