Upgrade scalatest from 3.2.18 to 3.2.19 (#337)

Co-authored-by: scala-steward <162267+scala-steward-for-moia[bot]@users.noreply.github.com>

build.sbt

@@ -37,7 +37,7 @@ lazy val library = new {
     val scalaPB               = scalapb.compiler.Version.scalapbVersion
     val scalaPBJson           = "0.12.1"
     val scalaCheck            = "1.18.0"
-    val scalaTest             = "3.2.18"
+    val scalaTest             = "3.2.19"
     val scalaTestPlusCheck    = "3.2.14.0"
     val scapeGoat             = "2.1.6"
     val scalaCollectionCompat = "2.12.0"