Fixeswoocommerce/woocommerce-admin#4732
This updates `@wordpress/base-styles`, and because `@wordpress/components` depends on variables from it, that must be updated as well.
There are 3 major changes required as part of updating:
1. The $theme-color variable is no longer exposed by base-styles. Instead there are 3 css vars exposed. These are made available by use of a provided mixin. Situations where $theme-color was darkened using scss have been mapped as best as possible to the 2 other darkened shades of the css var that are available such as `--wp-admin-theme-color-darker-20` and `--wp-admin-theme-color-darker-10`. In some cases this means the colors are not exactly the same as before.
2. The post css `theme()` call is no longer available. All uses of this have been consolidated to use of the main theme css var `--wp-admin-theme-color`. This means that calls like `theme(secondary)` or `theme(outline)` etc have all been consolidated to the one color.
3. Many of the variables used for different shades of gray have been deprecated. These have been mapped across to the new gray variables. (Mapped according to the list described in woocommerce/woocommerce-admin#4732)
* Fix incorrect woocommere-admin spelling
* Update styles
* Add icons
* Add hover effect for coupon icons
* Remove variable comment
* Update color case
* Style lint fixes
* Use $theme-color
* Update icons, use wordpress/icons where possible
* Adjustment for using smaller default icons and no fills in the svgs
* Use var(--wp-admin-theme-color) instead of $theme-color
* Reorg coupons stylesheet
* Update PropTypes for ProductIcon
* Adjust icon export
* Rever to using $theme-color
* Add versions of link, people and currency-dollar
* Overide coupons icon background color
* Add background transition to icon wrapper
* refactor slider component to be functional
* Refactor RecommendedExtensions
* Refactor KnowledgeBase
* Refactor API to account for component location changes and categories
* Fix missing param description
* Remove unnessary use
* Pass down the category of the received plugins.
* Store the recommended plugins for the different categories separately.
* Pass down the category.
* Add new functions to get by category.
* set categories
* Handle new object for posts and recommendations
* Update tests
* Finish off implementing category param for data store resolvers
* Update js tests
* Fix incorrect reference to kb component
Co-authored-by: Dan Bitzer <danielbitzer@gmail.com>