Changed: reverted keycloak version in IT

Author: GPortas

src/test/java/edu/harvard/iq/dataverse/authorization/providers/oauth2/oidc/OIDCAuthenticationProviderFactoryIT.java

@@ -69,7 +69,7 @@ class OIDCAuthenticationProviderFactoryIT {
 
     // The realm JSON resides in conf/keycloak/test-realm.json and gets avail here using <testResources> in pom.xml
     @Container
-    static KeycloakContainer keycloakContainer = new KeycloakContainer("quay.io/keycloak/keycloak:26.1.4")
+    static KeycloakContainer keycloakContainer = new KeycloakContainer("quay.io/keycloak/keycloak:22.0")
         .withRealmImportFile("keycloak/test-realm.json")
         .withAdminUsername(adminUser)
         .withAdminPassword(adminPassword);