Upgrade MTA Web to use EAP 7.4

Currently the Web UI uses Version 7.3.0 of EAP in the downstream distribution.

And in upstream a version of WildFly (18.0.1).

The Web UI also depends on KeyCloak Server Overlay 8.0.1

We want to upgrade our OpenShift deployment so that all of the base images use OpenJDK 11.

The EAP 7.3 with OpenJDK 11 official container image has been deprecated.

So this is the incentive to upgrade the Web UI to EAP 7.4.3 (which is the version contained within the EAP 7.4 with Open JDK11 image).

The version of Wildfly required upstream is 23.0.2  and KeyCloak 15.1.1

It would be worthwhile running an analysis of the windup-web project in source mode for the target of eap:7 to see if any issues are generated.

EAP 7.4 Migration Guide: https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.4/html-single/migration_guide/index

EAP 7 Component details