Add lint ignore for color deprecated members

Author: daohoangson

packages/core/test/_.dart

@@ -305,9 +305,17 @@ class Explainer {
     return attr;
   }
 
+  // TODO: remove lint ignore when our minimum Flutter version >= 3.24
+  // ignore: deprecated_member_use
   String _color(Color c) => '#${_colorHex(c.alpha)}'
+      // TODO: remove lint ignore when our minimum Flutter version >= 3.24
+      // ignore: deprecated_member_use
       '${_colorHex(c.red)}'
+      // TODO: remove lint ignore when our minimum Flutter version >= 3.24
+      // ignore: deprecated_member_use
       '${_colorHex(c.green)}'
+      // TODO: remove lint ignore when our minimum Flutter version >= 3.24
+      // ignore: deprecated_member_use
       '${_colorHex(c.blue)}';
 
   String _colorHex(int i) {