Use design tokens in GlCollapsibleListbox
## Purpose
As part of [implementing design tokens across the product](https://gitlab.com/groups/gitlab-org/-/epics/13073), we need to update each component to use design tokens. This issue focuses on the GlCollapsibleListbox component from gitlab-ui.
## References
* [Token specification](https://www.figma.com/design/gJonmki8xmshYpM1oXBUL0/Applying-design-tokens?node-id=543-7461&t=XnwPlngMXYfSFoCf-1)
* [Vue component](https://gitlab.com/gitlab-org/gitlab-ui/-/tree/main/src/components/base/new_dropdowns/listbox)
* [Figma component](https://www.figma.com/design/qEddyqCrI7kPSBjGmwkZzQ/%F0%9F%93%99-Component-library?node-id=61252-95177&t=zyUDjl58KPQRHpdJ-0)
* Total adoption scanner findings: [195](https://gitlab-org.gitlab.io/frontend/pajamas-adoption-scanner/?search=extra.metadata.componentLabel%20eq%20%22component:dropdown-collapsible-listbox%22)
## Outcome
* Update the Figma Library to use the new tokens
* Update the component implementation to use the new tokens
## Note
Design tokens on `GlCollapsibleListbox` are shared with `GlDisclosureDropdown` and dependant on `action` semantic design tokens being implemented (likely with `GlButton`)
issue