JS: Shift line numbers in test file

Author: asgerf

javascript/ql/test/query-tests/Security/CWE-079/DomBasedXss/dates.js

@@ -2,6 +2,7 @@ import dateFns from 'date-fns';
 import dateFnsFp from 'date-fns/fp';
 import dateFnsEsm from 'date-fns/esm';
 import moment from 'moment';
+import dateformat from 'dateformat';
 
 function main() {
     let time = new Date();