Change SelectionMenu.Builder#Builder visibility to protected

src/main/java/net/dv8tion/jda/api/interactions/components/selections/SelectionMenu.java

@@ -212,7 +212,7 @@ class Builder
         private boolean disabled = false;
         private final List<SelectOption> options = new ArrayList<>();
 
-        private Builder(@Nonnull String customId)
+        protected Builder(@Nonnull String customId)
         {
             setId(customId);
         }