update stern version (#295)

Author: ludovicmotte

documentation/modules/setup/pages/setup.adoc

@@ -50,7 +50,7 @@ The following CLI tools are required for running the exercises in this tutorial.
 
 | https://github.com/wercker/stern[stern]
 | `brew install stern`
-| https://github.com/wercker/stern/releases/download/1.6.0/stern_linux_amd64[Download]
+| https://github.com/wercker/stern/releases/download/1.11.0/stern_linux_amd64[Download]
 | https://github.com/wercker/stern/releases/download/1.11.0/stern_windows_amd64.exe[Download]
 
 | https://github.com/mikefarah/yq[yq v2.4.1]