Required for
https://git.eclipse.org/r/c/platform/eclipse.platform.ui/+/177895

Also includes an update to Java 11 as platform requires that and it
should fine to update the plug-in.

Change-Id: Iaf250a68d75815096c18d788167e2b7d1f3bf1f7
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>