Increase dash version to 2.10 or greater

[delsim]

The dash version is currently limited to <2.10 as django-plotly-dash uses an internal API that is no longer present in 2.10
Refactoring of the code to avoid this (and any other steps) are needed to move to this version and beyond.

[Nizhurin]

It will be pretty cool if You can upgrade to dash > 2.0

[yzcheung]

The feature of exposing setProps to dash_clientside.clientSide_setProps was introduced in Dash version 2.16.1, which is quite a cool feature. It would be great if django-plotly-dash could keep up with this version update.

[mmc1718]

What would need doing to support more recent versions of Dash? Is #485 enough? I assume some code changes are required