fix(deps): update junit-framework monorepo to v6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -15,8 +15,8 @@ discord4j = "3.3.2"
 lunachatplus = "3.3.0"
 luckperms-api = "5.5"
 jetbrains-annotation = "26.1.0"
-junit = "5.14.4"
-junit-platform = "1.14.4"
+junit = "6.1.1"
+junit-platform = "6.1.1"
 
 [plugins]
 shadow = { id = "com.gradleup.shadow", version.ref = "shadow" }