Update kafka to 1.20.2 (#240)

Co-authored-by: scala-steward-asf[bot] <147768647+scala-steward-asf[bot]@users.noreply.github.com>

project/Versions.scala

@@ -30,7 +30,7 @@ object Versions {
 
   val scalaTestVersion = "3.2.19"
   val scalaPBVersion = "0.11.17"
-  val testcontainersVersion = "1.20.1"
+  val testcontainersVersion = "1.20.2"
   val logbackVersion = "1.3.14"
   val slf4jVersion = "2.0.16"
   // this depends on Kafka, and should be upgraded to such latest version