Merge pull request Wei-1#26 from scala-steward/update/scalatest-3.1.1

Update scalatest to 3.1.1

Author: Wei-1

build.sbt

@@ -4,6 +4,6 @@ version := "0.5"
 
 scalaVersion := "2.12.6"
 
-libraryDependencies += "org.scalatest" %% "scalatest" % "3.1.0" % "test"
+libraryDependencies += "org.scalatest" %% "scalatest" % "3.1.1" % "test"
 
 assemblyJarName in assembly := name.value + ".jar"