Missed a few in dashboard_skeleton.vue

Migrate remaining Bootstrap CSS utils to Tailwind

See merge request !4888



Merged-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Approved-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Co-authored-by: Peter Hegman <phegman@gitlab.com>

feat(Tailwind): add neutral constant colors

See merge request !4857



Merged-by: Thomas Hutterer <thutterer@gitlab.com>
Approved-by: Sascha Eggenberger <seggenberger@gitlab.com>
Approved-by: Thomas Hutterer <thutterer@gitlab.com>
Co-authored-by: sdejonge <sdejonge@gitlab.com>

# [105.4.0](v105.3.0...v105.4.0) (2024-12-13)

### Features

* **Tailwind:** add neutral constant colors ([85bd8ddf](85bd8ddf))