Bump org.junit:junit-bom from 5.13.4 to 6.0.1

Bumps [org.junit:junit-bom](https://github.com/junit-team/junit-framework) from 5.13.4 to 6.0.1.
- [Release notes](https://github.com/junit-team/junit-framework/releases)
- [Commits](junit-team/junit-framework@r5.13.4...r6.0.1)

---
updated-dependencies:
- dependency-name: org.junit:junit-bom
  dependency-version: 6.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -9,7 +9,7 @@ build-jdk = "11"
 test-jdk = "17"
 build-plugins = "2025.9"
 
-junit = "5.13.4"
+junit = "6.0.1"
 jacoco = "0.8.13"
 updates = "0.52.0"
 checker = "0.6.16"