AC-14418:Investigate the latest version less.js

Author: sandesh-as

dev/tests/static/testsuite/Magento/Test/Js/_files/blacklist/magento.txt

@@ -18,6 +18,7 @@ lib/web/prototype/**/*.js
 lib/web/jquery/jstree/jquery.jstree.js
 lib/web/jquery/colorpicker/js/colorpicker.js
 lib/web/chartjs/chartjs-adapter-moment.js
+lib/web/less/less.min.js
 
 // MINIFIED FILES
 app/code/**/*.min.js