fix test

Author: Rich-Harris

devalue.test.js

@@ -150,7 +150,7 @@ describe('XSS', (t) => {
 	t(
 		'Dangerous regex',
 		/[</script><script>alert('xss')//]/,
-		`new RegExp("[\\u003C\\\\\\u002Fscript\\u003E\\u003Cscript\\u003Ealert('xss')\\\\\\u002F\\\\\\u002F]", "")`
+		`new RegExp("[\\u003C\\u002Fscript\\u003E\\u003Cscript\\u003Ealert('xss')\\u002F\\u002F]", "")`
 	);
 });