Merge pull request #183 from indoorvivants/update/utest-0.8.4

Update utest to 0.8.4

Author: mergify[bot]

build.sbt

@@ -35,7 +35,7 @@ val V = new {
 
   val mill = "0.10.15"
 
-  val utest = "0.8.2"
+  val utest = "0.8.4"
 
   val weaver = "0.8.4"