Bump org.junit.jupiter:junit-jupiter from 5.13.4 to 6.0.0

Bumps [org.junit.jupiter:junit-jupiter](https://github.com/junit-team/junit-framework) from 5.13.4 to 6.0.0.
- [Release notes](https://github.com/junit-team/junit-framework/releases)
- [Commits](junit-team/junit-framework@r5.13.4...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] <[email protected]>

Author: dependabot[bot]

build.gradle

@@ -66,7 +66,7 @@ dependencies {
 	}
 	dtdparseImplementation 'io.sf.carte:tokenproducer:[3.0,)'
 	dtdeclImplementation 'io.sf.jclf:jclf-text:[5.0.0,)'
-	testImplementation 'org.junit.jupiter:junit-jupiter:5.14.0'
+	testImplementation 'org.junit.jupiter:junit-jupiter:6.0.0'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }