Pagesense snippet required updating

Pagesense snippet required updating

Hi,

My pagesense snippet.js is flagging a warning in:
  1. Browser console logging
  2. PageSpeed Insights test
Error message as follows:
DOM Mutation Events, including `DOMSubtreeModified`, `DOMNodeInserted`, `DOMNodeRemoved`, `DOMNodeRemovedFromDocument`, `DOMNodeInsertedIntoDocument`, and `DOMCharacterDataModified` are deprecated (https://w3c.github.io/uievents/#legacy-event-types) and will be removed. Please use `MutationObserver` instead.

Use of Mutation Events is deprecated. Use MutationObserver instead.

URL to my website: 
https://storagelord.com.au/locations/gawler-storage-units/

Can you please advise if I need to do anything from my end?