Bump org.apache.kafka:kafka-clients in the backend group (#301)

Bumps the backend group with 1 update: org.apache.kafka:kafka-clients.


Updates `org.apache.kafka:kafka-clients` from 3.7.1 to 3.8.0

---
updated-dependencies:
- dependency-name: org.apache.kafka:kafka-clients
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: backend
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

gradle/libs.versions.toml

@@ -40,7 +40,7 @@ ktor-serverTests = { module = "io.ktor:ktor-server-tests", version.ref = "ktor-v
 jacksonDatatypejsr310 = { module = "com.fasterxml.jackson.datatype:jackson-datatype-jsr310", version = "2.17.2" }
 
 #Kafka
-kafka-clients = { module = "org.apache.kafka:kafka-clients", version = "3.7.1"}
+kafka-clients = { module = "org.apache.kafka:kafka-clients", version = "3.8.0"}
 kafka-avro-serializer = { module = "io.confluent:kafka-avro-serializer", version = "7.6.0"}
 commons-compress = { module = "org.apache.commons:commons-compress", version = "1.26.2" }