UI ftests don't run on recent Chrome versions

Google recently released Chrome 85 and our pipelines started to fail.
After some investigation we found out that there seem to be some issues (or changes that need to be addressed accordingly) with those recent Chrome versions. The "workaround" was to "lock" Chrome on version 84 to ensure our pipelines run correctly.

Some time ago Gabriel Barata did also some work in order to lock dependencies to solve other similar error (NXP-29439), still it now seems to go beyond that.

It was discovered on Aspera Connector context, but it would probably happen in WebUI and other projects that use our ftests framework and approach.

To reproduce it locally, using Aspera, the following steps are enough:

• Nuxeo 10.10 server, hot fixed with latest Aspera RC installed;
• Checkout https://github.com/nuxeo/nuxeo-aspera-connector (master);
• Open "nuxeo-aspera-web" and npm install;
• Execute npm run ftest

Please make sure latest Chrome is installed.