KEYCLOAK-7594 Upgrade to Wildfly 13. Cross-DC: Upgrade to infinispan server 9.2.4 and JDG 7.2

Co-authored-by: Douglas Palmer <dpalmer@redhat.com>
Co-authored-by: stianst <stianst@gmail.com>
Co-authored-by: Hynek Mlnarik <hmlnarik@redhat.com>

examples/providers/rest/pom.xml

@@ -48,7 +48,7 @@
         </dependency>
         <dependency>
             <groupId>org.jboss.spec.javax.ws.rs</groupId>
-            <artifactId>jboss-jaxrs-api_2.0_spec</artifactId>
+            <artifactId>jboss-jaxrs-api_2.1_spec</artifactId>
         </dependency>
     </dependencies>