chore(deps-dev): bump keycloak-core in /crd-generator/test

Bumps [keycloak-core](https://github.com/keycloak/keycloak) from 19.0.3 to 20.0.0.
- [Release notes](https://github.com/keycloak/keycloak/releases)
- [Commits](keycloak/keycloak@19.0.3...20.0.0)

---
updated-dependencies:
- dependency-name: org.keycloak:keycloak-core
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

crd-generator/test/pom.xml

@@ -30,7 +30,7 @@
   <name>Fabric8 :: CRD generator :: Tests</name>
 
   <properties>
-    <keycloak-version>19.0.3</keycloak-version>
+    <keycloak-version>20.0.0</keycloak-version>
   </properties>
 
   <dependencies>