Update dependency com.github.dasniko:testcontainers-keycloak to v4

Author: renovate[bot]

build.gradle

@@ -107,7 +107,7 @@ dependencies {
 
 	testImplementation 'org.testcontainers:testcontainers'
 	testImplementation 'org.testcontainers:junit-jupiter'
-	testImplementation 'com.github.dasniko:testcontainers-keycloak:3.9.0'
+	testImplementation 'com.github.dasniko:testcontainers-keycloak:4.0.0'
 
 	testImplementation 'org.testcontainers:k3s'
 	testImplementation 'org.awaitility:awaitility'