chore(deps): update dependency @gitlab/ui to v23.6.1

This MR contains the following updates:

Package	Type	Update	Change
@gitlab/ui (source)	dependencies	minor	23.3.0 -> 23.6.1

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

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Release Notes

gitlab-org/gitlab-ui

v23.6.1

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Bug Fixes

• GlTooltip: Update tooltip based on audit (4dc58f3)

v23.6.0

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Features

• css: Add white-space-pre-line utility (6ece2b3)

v23.5.0

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Features

• css: Add gl-mb-8 spacing utility (8fa31a5)

v23.4.0

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Features

• css: Add margins space levels 4 and 5 (2ee1371)

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