save some ram by closing events

src/scrape.js

@@ -36,6 +36,7 @@ const { page_ids, output, events: event_file } = parse_args(
       events.map(async (event) => {
         const event_page = await browser.newPage();
         const event_data = await load_event(event_page, event.event_id);
+        event_page.close();
         return {
           ...event_data,
           ...event,