Merge pull request #292 from saurabhpro/renovate/confluentinc-cp-kafka-7.x

Update confluentinc/cp-kafka Docker tag to v7.9.0

Author: saurabhpro

coursera-pcdp-parallel-concurrent-distributed-java/distributed-java/kafka-demo/docker-compose.yml

@@ -13,7 +13,7 @@ services:
       ZOOKEEPER_TICK_TIME: 2000
 
   broker:
-    image: confluentinc/cp-kafka:7.8.0
+    image: confluentinc/cp-kafka:7.9.0
     hostname: broker
     container_name: broker
     depends_on: