Update junit-framework monorepo to v6 (#60)

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

Author: renovate[bot]

settings.gradle.kts

@@ -23,8 +23,8 @@ dependencyResolutionManagement {
         create("libs") {
             version("minestom", "2025.09.13-1.21.8")
             version("adventure", "4.24.0")
-            version("junit", "5.14.0")
-            version("junit.platform", "1.14.0")
+            version("junit", "6.0.0")
+            version("junit.platform", "6.0.0")
             version("mockito", "5.20.0")
             version("cyano", "0.3.3")