chore(tailwind.config): use gray from tailwindcss/colors, don't spread all colors

tailwind.config.ts

@@ -9,7 +9,7 @@ const config: Config = {
   ],
   theme: {
     colors: {
-      ...colors,
+      gray: colors.gray,
       primary: {
         DEFAULT: 'hsl(340, 76%, 47%)',
         light: 'hsl(340, 76%, 57%)',