Fix Unrecognized field "features" in ServerInfoRepresentation

Update to Keycloak 22.0.4 to accommodate for "new" features field in server response.
Using 22.0.4 also in CI ensures that this is also properly tested.

Fixes #927

.github/workflows/ci.yaml

@@ -32,7 +32,7 @@ jobs:
           - KEYCLOAK_VERSION: 19.0.3
           - KEYCLOAK_VERSION: 20.0.5
           - KEYCLOAK_VERSION: 21.1.1
-          - KEYCLOAK_VERSION: 22.0.0
+          - KEYCLOAK_VERSION: 22.0.4
     steps:
       - uses: actions/checkout@v3
         with:

pom.xml

@@ -59,7 +59,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
-        <keycloak.version>22.0.0</keycloak.version>
+        <keycloak.version>22.0.4</keycloak.version>
 
         <checkstyle-plugin.version>3.2.0</checkstyle-plugin.version>
         <checkstyle.version>10.0</checkstyle.version>