Update kafka-client.version to v4

Author: renovate[bot]

pom.xml

@@ -37,7 +37,7 @@
     <sonar.projectKey>dropwizard_dropwizard-kafka</sonar.projectKey>
 
     <brave.version>6.1.0</brave.version>
-    <kafka-client.version>3.8.1</kafka-client.version>
+    <kafka-client.version>4.0.0</kafka-client.version>
     <spring-kafka.version>3.3.4</spring-kafka.version>
   </properties>