fix(GlKeysetPagination): externalize labels

See merge request gitlab-org/gitlab-ui!4091



Merged-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Approved-by: Deepika Guliani <dguliani@gitlab.com>
Approved-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Reviewed-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Co-authored-by: Paul Gascou-Vaillancourt <paul.gascvail@gmail.com>

## [78.15.1](gitlab-org/gitlab-ui@v78.15.0...v78.15.1) (2024-04-17)

### Bug Fixes

* **GlKeysetPagination:** externalize labels ([9057c191](gitlab-org/gitlab-ui@9057c191))