I updated to the latest version in the 5.x major version (5.1.2). I opted not to upgrade further since version 6 only works with Webpack 5

Depends on D6681

1. I checked the breaking changes in the CHANGELOG.md file. I found this which didn't list anything relevant
2. Ran yarn prod in both web and landing. Ran the web app and landing page and played around. (This plugin isn't used in dev mode)