Don't run update hooks inside install

Problem/Motivation

If distributing this module via a distribution the default config is overridden as the install hook is altering config.

Specifically problematic is its calling siteimprove_update_8102 which changes a bunch of config.

Proposed resolution

Do not call unnecessary update hooks inside hook_install. Use config/install/siteimprove.settings.yml to set your default installed config.