Upgrade to Bloop 1.4.7 + remove -J prefix

As of scalacenter/bloop#1455 Bloop do not need
the -J prefix on the jvmOptions. Also there is a plan to remove support
for the -J prefix coming from debugSession/start request
(scalacenter/bloop#1456).

build.sbt

@@ -186,7 +186,7 @@ lazy val V = new {
   val scalameta = "4.4.8"
   val semanticdb = scalameta
   val bsp = "2.0.0-M13"
-  val bloop = "1.4.6-40-6418e91f"
+  val bloop = "1.4.7"
   val scala3 = "3.0.0-M3"
   val bloopNightly = bloop
   val sbtBloop = bloop

metals/src/main/scala/scala/meta/internal/metals/debug/DebugProvider.scala

@@ -293,13 +293,6 @@ class DebugProvider(
       case json: JsonElement
           if parameters.getDataKind == b.DebugSessionParamsDataKind.SCALA_MAIN_CLASS =>
         json.as[b.ScalaMainClass].foreach { main =>
-          val translated = main.getJvmOptions().asScala.map { param =>
-            if (!param.startsWith("-J"))
-              s"-J$param"
-            else
-              param
-          }
-          main.setJvmOptions(translated.asJava)
           if (main.getEnvironmentVariables() == null) {
             main.setEnvironmentVariables(Nil.asJava)
           }