fix(deps): update dependency @gitlab/ui to v91.12.0

This MR contains the following updates:

Package	Type	Update	Change	Pending
@gitlab/ui	dependencies	minor	91.3.0 -> 91.12.0	91.13.0

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

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Release Notes

gitlab-org/gitlab-ui (@​gitlab/ui)

v91.12.0

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Features

• GlBroadcast: Create and use design tokens (b6d73ad)

v91.11.0

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Features

• Tailwind: use border default design token for border classes (642bc1c)

v91.10.0

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Features

• add duo chat context menu search (6ac53de)

v91.9.0

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Features

• GlDuoChat: make insert code snippet work with server-generated elements (ce66a88)

v91.8.0

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Features

• GlLink: Add and update tokens (df90a00)

v91.7.0

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Features

• add improved duo chat context menu category items (05bdfa0)
• DesignTokens: Update read-only control background color (f6afc9a)

v91.6.0

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Features

• add initial duo chat context item menu component (40635b0)

v91.5.0

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Features

• Alert: Transparent border bottom (30f1863)

v91.4.0

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Features

• GlAlert: Replace english text with translation (38582dd)
• GlBanner: Replace english text with translation (a8ad872)
• GlBroadcastMessage: Replace english text with translation (6cf3e7c)
• GlModal: Replace english text with translation (2498b0e)
• GlToken: Add property 'removeLabel' (87b81a6)

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