fix(deps): update dependency org.keycloak:keycloak-admin-client to v26

Author: renovate[bot]

keycloak/build.gradle

@@ -25,7 +25,7 @@ protobuf {
 
 dependencies {
     api project(':core')
-    api 'org.keycloak:keycloak-admin-client:25.0.0'
+    api 'org.keycloak:keycloak-admin-client:26.0.4'
     api 'javax.annotation:javax.annotation-api:1.3.2'
     api 'org.bouncycastle:bcprov-jdk15on:1.70'
     api 'com.typesafe:config:1.4.3'