The version of jQuery that Sakai uses is a few years out of date (from 2015). Since the release of 1.11.3. in April 2015 they've put out 1.12.4 in the 1.x as well as multiple 2.x releases and are now on 3.x
I'm not sure which one we should upgrade to for 12 but I feel we should pull in a newer version of this, jquery-ui and jquery-migrate
I guess we'd have to look at our other libraries but
"Bootstrap 3.3.7 now supports jQuery 3+." https://github.com/twbs/bootstrap/issues/16834
So we're good there at least. This would also be a great opportunity to clean up jquery in the places it's no longer needed since portal loads it. Or possibly have maven replace the value of it via SAK-31306.