Automated changes by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action
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> [!NOTE]
> Bumps Medusa UI-related dependencies across apps/packages and updates DatePicker prop type metadata in UI specs.
>
> - **Dependencies**:
> - Upgrade `@medusajs/icons` to `2.12.0` across apps/packages.
> - Upgrade `@medusajs/ui` to `4.0.28` in `apps/api-reference`, `apps/ui`, and `packages/docs-ui`.
> - Upgrade `@medusajs/ui-preset` to `2.12.0` in `apps/ui` and `packages/tailwind`.
> - Update `yarn.lock` accordingly.
> - **UI Reference**:
> - Update `DatePicker` prop type metadata for `onBlur`, `onFocus`, `onKeyDown`, and `onKeyUp` in `apps/ui/specs/components/DatePicker/DatePicker.json`.
>
> <sup>Written by [Cursor Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit 222e08dc7d3aa920103aa9b35c50207dca4dd32f. This will update automatically on new commits. Configure [here](https://cursor.com/dashboard?tab=bugbot).</sup>
Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>
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