Update dependency @gitlab/ui to v17.18.0

This MR contains the following updates:

Package	Type	Update	Change
@gitlab/ui (source)	dependencies	minor	17.16.0 -> 17.18.0

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Release Notes

gitlab-org/gitlab-ui

v17.18.0

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Features

• Add gl-sticky utility class (d2fcd6a)

v17.17.0

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Features

• css: Add absolute position utility classes (976e498)
• spinner: Remove hardcoded aria-hidden (f50816c)
• Add gl-ml-11 utility class (05be542)

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