Update scala-library to 2.12.21

scala-steward-bot · xuwei-k · commit 13e0bc3e700a · 2025-12-09T09:50:36.000+09:00
diff --git a/project/Common.scala b/project/Common.scala
@@ -23,7 +23,7 @@ object Common {
     Nil
   )
 
-  val Scala212 = "2.12.20"
+  val Scala212 = "2.12.21"
   private[this] val Scala213 = "2.13.18"
   private[this] val Scala3 = "3.3.7"
 
