Bump junitVersion from 5.9.2 to 5.9.3 in /samples/jvm/junit5

Bumps `junitVersion` from 5.9.2 to 5.9.3.

Updates `org.junit.jupiter:junit-jupiter-api` from 5.9.2 to 5.9.3
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.9.2...r5.9.3)

Updates `org.junit.jupiter:junit-jupiter-engine` from 5.9.2 to 5.9.3
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.9.2...r5.9.3)

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

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

samples/jvm/junit5/build.gradle.kts

@@ -4,7 +4,7 @@
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat
 
 val atriumVersion = "0.18.0"
-val junitVersion = "5.9.2"
+val junitVersion = "5.9.3"
 
 plugins {
     kotlin("jvm") version "1.8.21"