bump: kafka-avro-serializer 7.4.6 (was 7.4.2) (akka#1761)

build.sbt

@@ -30,7 +30,7 @@ val slf4jVersion = "1.7.36"
 // this depends on Kafka, and should be upgraded to such latest version
 // that depends on the same Kafka version, as is defined above
 // See https://mvnrepository.com/artifact/io.confluent/kafka-avro-serializer?repo=confluent-packages
-val confluentAvroSerializerVersion = "7.4.2"
+val confluentAvroSerializerVersion = "7.4.6"
 val confluentLibsExclusionRules = Seq(
   ExclusionRule("log4j", "log4j"),
   ExclusionRule("org.slf4j", "slf4j-log4j12"),