Improve data colors by adding more steps for the colors that can be used on lines and charts

.changeset/rare-buses-search.md

@@ -0,0 +1,5 @@
+---
+'@primer/primitives': major
+---
+
+'Removed data color emphasis colors and replaced with colors 1-4. If you have been using emphasis before, consider replacing it with step 1 for the color. For example data-lime-color-emphasis -> data-lime-color-1'