update to mainargs with tested vararg handling

Author: bishabosha

build.sc

@@ -174,7 +174,7 @@ object Deps {
   val osLib = ivy"com.lihaoyi::os-lib:0.10.3"
   val pprint = ivy"com.lihaoyi::pprint:0.9.0"
   // val mainargs = ivy"com.lihaoyi::mainargs:0.7.1"
-  val mainargs = ivy"com.lihaoyi::mainargs:0.0.0-191-2161a9-DIRTY6998ecd4" // TODO: need to release this as a fix
+  val mainargs = ivy"com.lihaoyi::mainargs:0.0.0-191-37b70e" // TODO: need to release this as a fix
   val millModuledefsVersion = "0.10.9"
   val millModuledefsString = s"com.lihaoyi::mill-moduledefs:${millModuledefsVersion}"
   val millModuledefs = ivy"${millModuledefsString}"