Bump junit-jupiter-engine from 5.4.2 to 5.9.1 in /examples

Bumps [junit-jupiter-engine](https://github.com/junit-team/junit5) from 5.4.2 to 5.9.1.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.4.2...r5.9.1)

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

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

docs/examples/junit5/redis/build.gradle

@@ -5,7 +5,7 @@ dependencies {
 
     testImplementation "org.junit.jupiter:junit-jupiter-api:5.4.2"
     testImplementation "org.junit.jupiter:junit-jupiter-params:5.9.1"
-    testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:5.4.2"
+    testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:5.9.1"
     testImplementation project(":testcontainers")
     testImplementation project(":junit-jupiter")
     testImplementation 'org.assertj:assertj-core:3.23.1'