xenforo upgrade to jquery

This is a quick hack to upgrade jquery to 3.5.1. 3.4.1 on the current 2.1 branch has 2 known xss potentials in it. Snyk - [email protected] vulnerabilities | jquery 3.4.1 Not sure if they can even be run from XF, but it was something that showed up on my lighthouse report, so i addressed it. In my...