Merge pull request #187 from indoorvivants/update/scala-library-2.12.20

Update scala-library to 2.12.20

Author: mergify[bot]

build.sbt

@@ -23,7 +23,7 @@ sonatypeProfileName := "com.indoorvivants"
 val V = new {
   val scala213 = "2.13.12"
 
-  val scala212 = "2.12.18"
+  val scala212 = "2.12.20"
 
   val scala3 = "3.3.3"