[BD-46] feat: change outline primary btn color

[khudym]

Changed border color for outline-primary button
Issue

[openedx-webhooks]

Thanks for the pull request, @khudym!

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[adamstankiewicz]

@khudym I believe we will want this change not only on the alpha branch, but also on master so consuming applications can start using this style update now?

[khudym]

@khudym I believe we will want this change not only on the alpha branch, but also on master so consuming applications can start using this style update now?
Yes, of course, but i have a question, according to the design, the outline for the brand button looks a little inconsistent. When focused, it does not have a double border, like the primary button, the disabled is not visible at all. Maybe its color should also be changed?