Merge pull request #2780 from uPortal-Project/renovate/jstreeversion

fix(deps): update dependency org.webjars.npm:jstree to v3.3.16

Author: ChristianMurphy

gradle.properties

@@ -116,7 +116,7 @@ xstreamVersion=1.4.20
 bootstrapVersion=3.4.1
 coreJsBundleVersion=3.30.1
 regeneratorRuntimeVersion=0.14.0
-jstreeVersion=3.3.15
+jstreeVersion=3.3.16
 webComponentPolyfillVersion=2.8.0
 whatwgFetchPolyfillVersion=3.6.2