Enable contrast check for display colors in HC

.changeset/empty-fireants-repair.md

@@ -0,0 +1,5 @@
+---
+'@primer/primitives': patch
+---
+
+Update high contrast display colors to meet contrast requirements

scripts/color-contrast.config.ts

@@ -246,6 +246,7 @@ const defaultContrast: ContrastRequirement[] = setContrastRatios('default', [
 
 const highContrast: ContrastRequirement[] = setContrastRatios('highContrast', [
   ...baseRequirements,
+  ...displayColorRequirements,
   // add high contrast overwrites or additions
 ])