Add missing uPickle benchmark for Scala.js

Author: plokhotnyuk

jsoniter-scala-benchmark/js/src/main/scala-3/com/github/plokhotnyuk/jsoniter_scala/benchmark/Main.scala

@@ -1011,6 +1011,7 @@ object Main {
       B("playJson")(benchmark.playJson()),
       B("playJsonJsoniter")(benchmark.playJsonJsoniter()),
       B("smithy4sJson")(benchmark.smithy4sJson()),
+      B("uPickle")(benchmark.uPickle()),
       B("zioJson")(benchmark.zioJson()),
       B("zioSchemaJson")(benchmark.zioSchemaJson())
     ))