Does not use passive listeners to improve scrolling performance

I’m getting the following PageSpeed Insights notices on all my sites using the Woocommerce Notification Premium plugin:

Consider marking your touch and wheel event listeners as passive to improve your page’s scroll performance. Learn more.
Source
…js/woocommerce-notification.min.js:1:272(www.oakabooks.co.uk)
…js/woocommerce-notification.min.js:1:399(www.oakabooks.co.uk)

Is there anything that can be done to fix this and get rid of the PSI error?

Here’s the example: https://pagespeed.web.dev/report?url=https%3A%2F%2Fwww.oakabooks.co.uk%2F

And here’s a screenshot: https://capture.dropbox.com/g27RFz4u3PKvEr5C

Thank you!

Best wishes,
Harry