Update scalacheck-1-14 to 3.1.2.0 (#906)

Co-authored-by: Denis Rosset <physics@denisrosset.com>

build.sbt

@@ -8,7 +8,8 @@ lazy val scalaVersions: Map[String, String] =
 
 lazy val scalaCheckVersion = "1.14.3"
 lazy val scalaTestVersion = "3.1.2"
-lazy val scalaTestPlusVersion = "3.1.1.1"
+lazy val scalaTestPlusVersion = "3.1.2.0"
+
 lazy val shapelessVersion = "2.3.3"
 lazy val disciplineScalaTestVersion = "1.0.1"
 lazy val machinistVersion = "0.6.8"