[config] Add HB_NO_COLOR to HB_LEAN

Part of https://github.com/harfbuzz/harfbuzz/issues/1652
diff --git a/src/hb-config.hh b/src/hb-config.hh
index 6393f56..ae7ca17 100644
--- a/src/hb-config.hh
+++ b/src/hb-config.hh
@@ -45,6 +45,7 @@
 #define HB_NO_ATEXIT
 #define HB_NO_BITMAP
 #define HB_NO_CFF
+#define HB_NO_COLOR
 #define HB_NO_GETENV
 #define HB_NO_MATH
 #define HB_NO_OT_LAYOUT_UNUSED