Update magnolia to 1.3.0

Author: scala-steward

build.sbt

@@ -23,7 +23,7 @@ lazy val dhalljMagnolia = (projectMatrix in file("modules/dhallj-magnolia"))
     libraryDependencies ++= {
       CrossVersion.partialVersion(scalaVersion.value) match {
         case Some((3, _)) =>
-          Seq("com.softwaremill.magnolia1_3" %% "magnolia" % "1.2.7")
+          Seq("com.softwaremill.magnolia1_3" %% "magnolia" % "1.3.0")
         case _ =>
           Seq(
             "com.softwaremill.magnolia1_2" %% "magnolia"      % "1.1.3",