jQuery is updated to 3.5.1 in version April 2020 SR3
From the QlikView April 2020 SR3 Release Notes:
Cross-site scripting (XSS) vulnerability with jQuery 3.4.1 and below Jira issue ID: QV-20277 jQuery upgraded to version 3.5.1. This replaces the fix delivered in SR2 which was found to be insufficient.