chore: Re-generate proto test message with newer protoc (#1869)

Author: johanandren

build.sbt

@@ -287,7 +287,7 @@ lazy val tests = project
     name := "akka-stream-kafka-tests",
     libraryDependencies ++= Seq(
         "com.typesafe.akka" %% "akka-discovery" % akkaVersion,
-        "com.google.protobuf" % "protobuf-java" % "3.25.8", // use the same, or later, version as in scalapb
+        "com.google.protobuf" % "protobuf-java" % "4.32.1",
         "io.confluent" % "kafka-avro-serializer" % confluentAvroSerializerVersion % Test excludeAll (confluentLibsExclusionRules: _*),
         // See https://github.com/sbt/sbt/issues/3618#issuecomment-448951808
         "javax.ws.rs" % "javax.ws.rs-api" % "2.1.1" artifacts Artifact("javax.ws.rs-api", "jar", "jar"),