Bump slf4j-simple from 1.7.30 to 2.0.5 in /examples

Bumps [slf4j-simple](https://github.com/qos-ch/slf4j) from 1.7.30 to 2.0.5.
- [Release notes](https://github.com/qos-ch/slf4j/releases)
- [Commits](qos-ch/slf4j@v_1.7.30...v_2.0.5)

---
updated-dependencies:
- dependency-name: org.slf4j:slf4j-simple
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

examples/kafka-cluster/build.gradle

@@ -13,5 +13,5 @@ dependencies {
     testImplementation 'org.apache.kafka:kafka-clients:2.8.0'
     testImplementation 'org.assertj:assertj-core:3.20.2'
     testImplementation 'com.google.guava:guava:23.0'
-    testImplementation 'org.slf4j:slf4j-simple:1.7.30'
+    testImplementation 'org.slf4j:slf4j-simple:2.0.5'
 }