Merge pull request #298 from scala-steward/update/zio-2.1.6

Update zio, zio-streams, zio-test, ... to 2.1.6

project/Dependencies.scala

@@ -1,5 +1,5 @@
 object Dependencies {
   val collectionCompatVersion = "2.12.0"
   val jmhVersion              = "1.37"
-  val zioVersion              = "2.1.5"
+  val zioVersion              = "2.1.6"
 }