fix(deps): update dependency @gitlab/ui to v39

This MR contains the following updates:

Package	Type	Update	Change
@gitlab/ui (source)	dependencies	major	38.12.0 -> 39.1.0

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

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Release Notes

gitlab-org/gitlab-ui

v39.1.0

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Features

• GlTable: Add vertical-align: top to table th and td (4dc5c31), closes /gitlab.com/gitlab-org/gitlab-ui/-/issues/1759#note_900275198
• GlTable: Update text color and borders (1379638)

v39.0.0

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Reverts

• add character counter to gl-form-textarea (70a7a3f)

BREAKING CHANGES

• The feature added in gitlab-org/gitlab-ui!2738 (merged) has been removed, as it causes complications regarding a validator used in GitLab. This feature will be reconsidered and re-implemented later.

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