docs(DesignTokens): Add more guidance

See merge request gitlab-org/gitlab-ui!4478



Merged-by: Scott de Jonge <sdejonge@gitlab.com>
Approved-by: Scott de Jonge <sdejonge@gitlab.com>
Approved-by: Dan MH <dmizzi-harris@gitlab.com>
Reviewed-by: Scott de Jonge <sdejonge@gitlab.com>
Co-authored-by: Jeremy Elder <jelder@gitlab.com>

Use alpha transparency for new darkmode. Also updats the values
for light mode to follow suit.

feat(Avatar): Use new darkmode colors

See merge request gitlab-org/gitlab-ui!4476



Merged-by: Paul Slaughter <pslaughter@gitlab.com>
Approved-by: Jeremy Elder <jelder@gitlab.com>
Approved-by: Scott de Jonge <sdejonge@gitlab.com>
Approved-by: Paul Slaughter <pslaughter@gitlab.com>
Reviewed-by: Scott de Jonge <sdejonge@gitlab.com>
Co-authored-by: Sascha Eggenberger <seggenberger@gitlab.com>

chore: add max-params eslint rule

See merge request gitlab-org/gitlab-ui!4485



Merged-by: Paul Slaughter <pslaughter@gitlab.com>
Approved-by: Paul Slaughter <pslaughter@gitlab.com>
Co-authored-by: lorenzvanherwaarden <lvanherwaarden@gitlab.com>

# [88.6.0](gitlab-org/gitlab-ui@v88.5.0...v88.6.0) (2024-08-09)

### Features

* **Avatar:** Use new darkmode colors ([9af079a4](gitlab-org/gitlab-ui@9af079a4))