Update dependency @gitlab/ui to v28 - autoclosed

This MR contains the following updates:

Package	Type	Update	Change
@gitlab/ui (source)	dependencies	major	27.15.0 -> 28.0.0

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

gitlab-org/gitlab-ui

v28.0.0

Compare Source

Bug Fixes

• GlFormCheckbox: Show pointer cursor on hover (dd1f45a)
• GlFormCheckboxTree: Increase indentation to better align checkbox (1e4e301)

Features

• GlFormCheckbox: Style checkboxes according to design (ec54f68)
• GlFormRadio: Style custom radio boxes and improve text spacing (874260f)

BREAKING CHANGES

• GlFormRadio: updates gitlab-ui radio box elements to utilize some of the same stylings as the checkboxes taking advantage of bootstrap's styled radio implementation, with alternations made to conform to the UI kit design including colors, hover states, and other enhancements
• GlFormCheckbox: updates gitlab-ui checkboxes to utilize bootstrap's styled checkbox implementation, with alternations made to conform to the UI kit design including colors, hover states, and other enhancements

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