Update scalacheck to 1.16.0

Author: 47erbot

build.sbt

@@ -20,7 +20,7 @@ lazy val V = new {
   val runtime: String             = "0.7.0"
   val scala: String               = "2.13.8"
   val scala212: String            = "2.12.15"
-  val scalacheck: String          = "1.15.4"
+  val scalacheck: String          = "1.16.0"
   val scalacheckShapeless: String = "1.3.0"
   val scalamacros: String         = "2.1.1"
   val scalariform: String         = "0.2.10"