Update Ultimate Member plugin honeypot CSS and JS

Removed wp_add_inline_script/style and used `um_request` as default honeypot key in um-styles.css and um-scripts.js.

assets/css/um-styles.css

@@ -1152,3 +1152,8 @@ small.um-max-filesize span{
 	float: none;
 	height: auto;
 }
+
+/*Makes the honeypot invisible.*/
+.um_request_name {
+	display: none !important;
+}