fix(colors): update error color to be more visible

Changed the error color from dark_red to red for better visibility.
This change ensures that error messages are more noticeable and
improves the overall user experience.

lua/aurora/colors/aurora.lua

@@ -22,7 +22,7 @@ local colors = {
 
 -- more semantically meaningful colors
 
-colors.error = colors.dark_red
+colors.error = colors.red
 colors.warn = colors.orange
 colors.info = colors.green
 colors.hint = colors.purple