update scalac to 3.7.4-RC1 and fix change in compiler settings from Xfatalwarnings to Werror

Author: Oron Port

build.sbt

@@ -5,7 +5,7 @@ commands += DFHDLCommands.docExamplesRefUpdate
 
 // format: off
 val projectName = "dfhdl"
-val compilerVersion = "3.7.3"
+val compilerVersion = "3.7.4-RC1"
 
 inThisBuild(
   List(

plugin/src/main/scala/plugin/TopAnnotPhase.scala

@@ -137,7 +137,7 @@ class TopAnnotPhase(setting: Setting) extends CommonPhase:
                         mkList(paramVDs.map(vd =>
                           Literal(Constant(vd.symbol.docString.getOrElse("")))
                         ))
-                      val Werror = Literal(Constant(ctx.settings.XfatalWarnings.value))
+                      val Werror = Literal(Constant(ctx.settings.Werror.value))
                       val hasResourceOwnerTree =
                         Literal(Constant(clsSym.hasNestedMemberCond(_ <:< resourceOwnerTpe)))
                       def portCond(tpe: Type): Boolean =