Update colour tokens names

[jackwingsam]

1. Change Violet to Purple
2. Pink to Magenta
3. Lime green to Lime

We already have problems with violet and pink and have to override them.
https://github.com/bcgov/nr-theme/blob/main/design-tokens/light-tags.scss

For Lime green, update Figma library to reflect Github's token names.

This change will line up with Carbon's current token names.
https://carbondesignsystem.com/elements/color/tokens/