Update scalatest to 3.2.20 (#933)

Co-authored-by: typelevel-steward[bot] <106827141+typelevel-steward[bot]@users.noreply.github.com>

Author: typelevel-steward[bot]

build.sbt

@@ -4,7 +4,7 @@ val spark33Version = "3.3.4"
 val catsCoreVersion = "2.13.0"
 val catsEffectVersion = "3.7.0"
 val catsMtlVersion = "1.6.0"
-val scalatest = "3.2.19"
+val scalatest = "3.2.20"
 val scalatestplus = "3.1.0.0-RC2"
 val shapeless = "2.3.13"
 val scalacheck = "1.19.0"