RH-SSO 7.2 added support for servlet filter adapter but maven artifact for it seems to not be available from anywhere.

Documentation says:
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-servlet-filter-adapter</artifactId>
<version>3.4.3.Final-redhat1</version>
</dependency>

https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.2/html/securing_applications_and_services_guide/openid_connect_3#servlet_filter_adapter

It's also referenced in keycloak-parent:
https://maven.repository.redhat.com/ga/org/keycloak/keycloak-parent/3.4.3.Final-redhat-2/keycloak-parent-3.4.3.Final-redhat-2.pom

However, it's not available from the Red Hat maven repo:
https://maven.repository.redhat.com/ga/org/keycloak/keycloak-servlet-filter-adapter/

Only version available is 1.9.8.

Also, keycloak-saml-servlet-filter-adapter is unavailable.