Update avro4s-core to 4.0.12 (#293)

Author: the-pavels

Diff for: project/Dependencies.scala

@@ -5,8 +5,9 @@ object Dependencies {
   object V {
     val java8Compat = "1.0.2"
 
-    val avro4s     = "4.0.11"
+    val avro4s     = "4.0.12"
     val cats       = "2.7.0"
+
     val catsEffect = "3.3.11"
     val circe      = "0.14.1"
     val fs2        = "3.2.7"