chore(deps): update dependency @gitlab/ui to v21.13.0

This MR contains the following updates:

Package	Type	Update	Change
@gitlab/ui (source)	dependencies	minor	21.10.0 -> 21.13.0

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

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Release Notes

gitlab-org/gitlab-ui

v21.13.0

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Features

• buttons: Fix loading state styling for icon buttons (6fe6299)

v21.12.0

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Features

• css: Add utilisty css class for SVGs (44ed317)

v21.11.0

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Bug Fixes

• Align button dropdown padding with designs (d7b5789)
• provide stub for cropper (3be7fa6)

Features

• css: Add gl-lg-align-items-baseline utility class (454af43)
• css: Add gl-w-quarter utility class (dfd0500)

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