Did not update to the latest as there is some work involved in
aligning the casserver sample's XML configuration with the latest
cas-server-webapp.
Fixes gh-7874
Upgraded dependencies and removed a test in the Java Config LDAP
sample which is arguably an integration test since it starts up an
LDAP container. This test also isn't JDK 11 compatible and the
remaining integration tests in the sample cover the same material.
Issue: gh-5860