build: Update scalatest from 3.2.7 to 3.2.8

Author: j5ik2o-bot[bot]

project/Dependencies.scala

@@ -5,7 +5,7 @@ object Dependencies {
   object Versions {
     val scala212Version              = "2.12.13"
     val scala213Version              = "2.13.5"
-    val scalaTestVersion             = "3.2.7"
+    val scalaTestVersion             = "3.2.8"
     val logbackVersion               = "1.2.3"
     val scalaCollectionCompatVersion = "2.4.3"
     val dockerJavaVersion            = "3.2.8"