Update dependency net.serenity-bdd:serenity-junit to v4

Author: renovate[bot]

build.gradle

@@ -481,7 +481,7 @@ dependencies {
 
   testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter', version: versions.junit
   testImplementation 'net.serenity-bdd:serenity-rest-assured:3.8.1'
-  testImplementation group: 'net.serenity-bdd', name: 'serenity-junit', version: '3.8.1'
+  testImplementation group: 'net.serenity-bdd', name: 'serenity-junit', version: '4.2.9'
 
   functionalTestImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: versions.junit
   functionalTestRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: versions.junit