Custom Storybook version feature won't work for v8 #156

Defining custom Storybook version done in #107 is capped at Storybook v8 due to breaking change in Storybook CLI.

It's mentioned in the PR, but I've done some digging and here's where it failed. Might not be the only blocker

Code:

Issue:

- -s $STORYBOOK_STATIC_PATH

Reference:

With the release of Storybook 8, the -s CLI flag was removed. We recommend using the static directory instead if you need to serve static files.

Source:

https://storybook.js.org/docs/8/api/cli-options