Bump junit-jupiter in /.github/workflow-samples/kotlin-dsl

Bumps [junit-jupiter](https://github.com/junit-team/junit5) from 5.8.2 to 5.9.0.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](https://github.com/junit-team/junit5/compare/r5.8.2...r5.9.0)

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

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

.github/workflow-samples/kotlin-dsl/build.gradle.kts

@@ -10,7 +10,7 @@ dependencies {
     api("org.apache.commons:commons-math3:3.6.1")
     implementation("com.google.guava:guava:31.1-jre")
 
-    testImplementation("org.junit.jupiter:junit-jupiter:5.8.2")
+    testImplementation("org.junit.jupiter:junit-jupiter:5.9.0")
 }
 
 tasks.test {