Bug 579119 - version bump for org.eclipse.ui.tests

Change-Id: Id7db0002e2e7379ea583cd17d4ebf1f2ab7f672b
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.ui/+/191595
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Andrey Loskutov <loskutov@gmx.de>