Update scalatest to 3.2.1

Author: 47erbot

build.sbt

@@ -14,7 +14,7 @@ lazy val V = new {
   val circe: String     = "0.13.0"
   val classutil: String = "1.5.1"
   val http4s: String    = "0.21.6"
-  val scalatest: String = "3.2.0"
+  val scalatest: String = "3.2.1"
 }
 
 lazy val runtime = project