chore(deps): bump org.apache.kafka:kafka-clients from 3.8.1 to 4.3.1

Bumps org.apache.kafka:kafka-clients from 3.8.1 to 4.3.1.

---
updated-dependencies:
- dependency-name: org.apache.kafka:kafka-clients
  dependency-version: 4.3.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -206,7 +206,7 @@ springboot3-starter-cache = { module = "org.springframework.boot:spring-boot-sta
 spring-kafka2 = { module = "org.springframework.kafka:spring-kafka", version = "2.8.11" }
 spring-kafka3 = { module = "org.springframework.kafka:spring-kafka", version = "3.3.5" }
 spring-kafka4 = { module = "org.springframework.kafka:spring-kafka" }
-kafka-clients = { module = "org.apache.kafka:kafka-clients", version = "3.8.1" }
+kafka-clients = { module = "org.apache.kafka:kafka-clients", version = "4.3.1" }
 springboot4-otel = { module = "io.opentelemetry.instrumentation:opentelemetry-spring-boot-starter", version.ref = "otelInstrumentation" }
 springboot4-resttestclient = { module = "org.springframework.boot:spring-boot-resttestclient", version.ref = "springboot4" }
 springboot4-starter = { module = "org.springframework.boot:spring-boot-starter", version.ref = "springboot4" }