Update cats-core to 2.12.0

Author: scala-steward

project/Dependencies.scala

@@ -4,7 +4,7 @@ import org.portablescala.sbtplatformdeps.PlatformDepsPlugin.autoImport._
 object Dependencies {
 
   object Versions {
-    val catsCoreV     = "2.7.0"
+    val catsCoreV     = "2.12.0"
     val scalaCssV     = "1.0.0"
     val scalaJsDomV   = "2.2.0"
     val scalaJsReactV = "2.1.1"