chore(deps): update dependency @gitlab/ui to v20.17.0

This MR contains the following updates:

Package	Type	Update	Change
@gitlab/ui (source)	dependencies	minor	20.15.0 -> 20.17.0

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

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Release Notes

gitlab-org/gitlab-ui

v20.17.0

Compare Source

Features

• css: Add white-space: pre-wrap utility class (633c4cb)

v20.16.0

Compare Source

Features

• GlDatepicker: Allow for empty date values (452fd9a)
• utilities: add flex and spacing utilities for lg breakpoints (36791cd)

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