@rhusar I struggled a bit with TomEE.
Version 9.1 supports only JakartaEE 9.1 (https://tomee.apache.org/comparison.html)
There is at least one test that fails (org.jboss.arquillian.warp.jsf.ftest.redirection.TestJsfRedirect), because the jsf pages fail on TomEE 9 with the current JakartaEE 10 namespaces and work only with the JakartaEE 9 namespaces (xmlns:ui="http://xmlns.jcp.org/jsf/facelets" instead of xmlns:ui="jakarta.faces.facelets"). And this would break WildFly and JakartaEE 10.
So we would have to switch to version 10.0, which is still in development (currently: M2) and supports JakartaEE 10. But it requires Java 17.
This is only a matter of the test suite, arquillian-extension-warp could probably be built with Java 11. But we would have to run the "tomee-managed" profile with Java 17. Would this be possible with Github CI and would this be OK for you?
In the moment I observe a HTMLUnit javascript parse error in org.jboss.arquillian.warp.jsf.ftest.producer.TestJSFTestEnrichers - might be caused by the fact that TomEE uses MyFaces, while WildFly used Mojarra. Will have to dig further...