chore(deps): update kafka to v7.9.6

[renovate]

This PR contains the following updates:

Package	Update	Change
confluentinc/cp-enterprise-control-center	patch	7.9.5 → 7.9.6
confluentinc/cp-enterprise-kafka	patch	7.9.5 → 7.9.6
confluentinc/cp-ksqldb-cli	patch	7.9.5 → 7.9.6
confluentinc/cp-ksqldb-server	patch	7.9.5 → 7.9.6
confluentinc/cp-schema-registry	patch	7.9.5 → 7.9.6
confluentinc/cp-server	patch	7.9.5 → 7.9.6
confluentinc/cp-zookeeper	patch	7.9.5 → 7.9.6
io.confluent:kafka-avro-serializer	patch	7.9.5 → 7.9.6
io.confluent:kafka-json-schema-serializer	patch	7.9.5 → 7.9.6

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