Update doobie-core to 1.0.0-RC12

Author: scala-steward

build.sbt

@@ -6,7 +6,7 @@ val V = new {
   val scalatest     = "3.2.20"
   val scalacheck    = "1.19.0"
   val http4s        = "0.23.34"
-  val doobie        = "1.0.0-RC11"
+  val doobie        = "1.0.0-RC12"
   val catsCore      = "2.13.0"
   val zio           = "2.1.25"
   val zioCats       = "23.0.0.8"