Update dependency org.junit.jupiter:junit-jupiter to v6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -8,7 +8,7 @@ gradleToolingApi = "8.13"
 hamcrest = "3.0"
 jacoco = "0.8.8"
 jsonJava = "20240303"
-junit = "5.11.4"
+junit = "6.0.2"
 junixSocket = "2.10.1"
 logback = "1.5.29"
 picocli = "4.7.7"