deps: bump org.junit.jupiter:junit-jupiter from 5.13.1 to 6.0.0

Bumps [org.junit.jupiter:junit-jupiter](https://github.com/junit-team/junit-framework) from 5.13.1 to 6.0.0.
- [Release notes](https://github.com/junit-team/junit-framework/releases)
- [Commits](https://github.com/junit-team/junit-framework/compare/r5.13.1...r6.0.0)

---
updated-dependencies:
- dependency-name: org.junit.jupiter:junit-jupiter
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -79,7 +79,7 @@ dependencies {
     spotbugsPlugins 'com.h3xstream.findsecbugs:findsecbugs-plugin:1.14.0'
     testCompileOnly 'com.github.spotbugs:spotbugs-annotations:4.9.3'
     testImplementation 'io.papermc.paper:paper-api:1.21.4-R0.1-SNAPSHOT'
-    testImplementation 'org.junit.jupiter:junit-jupiter:5.13.1'
+    testImplementation 'org.junit.jupiter:junit-jupiter:6.0.0'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher:1.13.3'
 }