feat: updated magenta 4 color and rebuilt

[martin-ebay]

Fixes #1909

• This PR contains CSS changes
• This PR does not contain CSS changes

Description

updating magenta 4

Notes

Screenshots

Checklist

• I verify the build is in a non-broken state
• I verify all changes are within scope of the linked issue

• I regenerated all CSS files under dist folder
• I tested the UI in all supported browsers
• I did a visual regression check of the components impacted by doing a Percy build and approved the build
• I tested the UI in dark mode and RTL mode
• I added/updated/removed Storybook coverage as appropriate

[agliga]

There's some deleted files in dist. Just verify running the build doesn't add them again.
I'm fine merging like that if those are gone in src.

[martin-ebay]

@agliga there are large and small versions of the svgs that got deleted. I did a fresh build after nuking the dist folder locally.

[ArtBlue]

@martin-ebay , change the target branch to the skin repo 15.2.0.

[martin-ebay]

@ArtBlue updated the base branch. Looks like I don't have access to merge