Latest is not the latest actually

In the README it is said that the default value for the `version` input is `latest`, though it's not the case anymore after https://github.com/algolia/setup-algolia-cli/commit/ecd8ce364b0b18dda462fd3edfa94d0c7da17838 (a fix for #1).

https://github.com/algolia/setup-algolia-cli/blob/ecd8ce364b0b18dda462fd3edfa94d0c7da17838/action.yml#L6-L10

Ideally, the proper implementation for `latest` is awaited. Though it may be not so straightforward as described in [the docs](https://docs.github.com/en/repositories/releasing-projects-on-github/linking-to-releases) because the file name is not static.

Anyhow, having outdated `1.2.0` as a hard-coded default version doesn't make much sense because the CLI evolves constantly. Currently it's 1.4.2. You'd have to create a new version of this action every time a new version of CLI comes out.

Or at least a correction of the README is necessary to avoid confusion. I'd suggest removing the default altogether in this case.