Minimum requirement of org.eclipse.e4.tools.emf.ui was outdated and
should be updated to latest version

Change-Id: Ia91352fd852ebbdb8b10be98707fd9d19f6f65a3
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
Reviewed-on: https://git.eclipse.org/r/c/pde/eclipse.pde.ui/+/185661
Tested-by: PDE Bot <pde-bot@eclipse.org>