Update dependency org.junit:junit-bom to v6 (#3337)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -48,7 +48,7 @@ piston = "0.5.10"
 
 # Tests
 mockito = "5.20.0"
-junit = "5.11.1"
+junit = "6.0.0"
 
 # Gradle plugins
 pluginyml = "0.6.0"