Use 'gray' instead of 'dim' ANSI color (github doesn't seem to support 'dim')

cibuildwheel/logger.py

@@ -228,6 +228,7 @@ class Colors:
         self.bright_red = "\033[91m" if enabled else ""
         self.bright_green = "\033[92m" if enabled else ""
         self.white = "\033[37m\033[97m" if enabled else ""
+        self.gray = "\033[90m" if enabled else ""
 
         self.bg_grey = "\033[48;5;235m" if enabled else ""
 

cibuildwheel/options.py

@@ -681,7 +681,7 @@ class Options:
         c = log.colors
 
         result = ""
-        result += c.faint if not has_been_set else ""
+        result += c.gray if not has_been_set else ""
         result += f"{option_name}: "
 
         if overrides_value_strs: