GUACAMOLE-1594: Update all Java and JavaScript dependencies to latest compatible.

NOTE: Several WebPack plugins could not be updated as all plugins within
WebPack's "webpack-contrib" have dropped support for WebPack v4
entirely, but Closure Compiler only supports WebPack v4.

doc/licenses/jquery-3.6.1/README

@@ -0,0 +1,8 @@
+jQuery (http://jquery.com/)
+---------------------------
+
+    Version: 3.6.1
+    From: 'OpenJS Foundation' (https://openjsf.org/)
+    License(s):
+        MIT (bundled/jquery-3.6.1/LICENSE.txt)
+