test(GlBanner): add A11Y tests for GlBanner

Closes #2424

See merge request gitlab-org/gitlab-ui!4096



Merged-by: Scott de Jonge <sdejonge@gitlab.com>
Approved-by: Justin Ho Tuan Duong <hduong@gitlab.com>
Approved-by: Scott de Jonge <sdejonge@gitlab.com>
Reviewed-by: Justin Ho Tuan Duong <hduong@gitlab.com>
Reviewed-by: Scott de Jonge <sdejonge@gitlab.com>
Co-authored-by: Chandra Kiran G <chandrakiran.g19@gmail.com>

test(GlTabs): A11Y tests for GlTabs

Closes #2354

See merge request !4098



Merged-by: Scott de Jonge <sdejonge@gitlab.com>
Approved-by: Payton Burdette <pburdette@gitlab.com>
Approved-by: Scott de Jonge <sdejonge@gitlab.com>
Co-authored-by: Deepika Guliani <dguliani@gitlab.com>

fix(GlCard): Fixing header and footer inner border radii

See merge request gitlab-org/gitlab-ui!4089



Merged-by: Mark Florian <mflorian@gitlab.com>
Approved-by: Martin Wortschack <mwortschack@gitlab.com>
Approved-by: Mark Florian <mflorian@gitlab.com>
Approved-by: Dan Mizzi-Harris <dmizzi-harris@gitlab.com>
Co-authored-by: GitLab Bot <gitlab-bot@gitlab.com>
Co-authored-by: Julia Miocene <jmiocene@gitlab.com>

## [78.15.2](gitlab-org/gitlab-ui@v78.15.1...v78.15.2) (2024-04-18)

### Bug Fixes

* **GlCard:** Fixing header and foter inner border radii ([1c28af7a](gitlab-org/gitlab-ui@1c28af7a))