Updating packages to support React ^17.0.0

[rubenthoms]

Are there any plans to keep this repo/package up to date (i.e. support the new React version ^17.0.0)?

[emilykl]

This is a blocker for React 18 support.

Specifically this line: https://github.com/plotly/react-colorscales/blob/8a5edaf66b738186fd669ec7b6d49eefb80759ee/src/components/ColorscalePicker.js#L7

is not compatible with react-select>=2, and react-select needs to be upgraded to support react>=17.

There may be other issues but that's the first one which breaks the build.

cc @gvwilson @ndrezn @T4rk1n