fix wrong middleware priority

src/main/java/com/github/kaktushose/jda/commands/dispatching/middleware/MiddlewareRegistry.java

@@ -91,7 +91,7 @@ public MiddlewareRegistry unregister(Priority priority, Collection<Middleware> m
      * @return a set of all registered middlewares {@link Middleware Middlewares}
      */
     public Set<Middleware> getMiddlewares() {
-        return middlewares.values().stream().flatMap(Collection::stream).collect(Collectors.toUnmodifiableSet());
+        return middlewares.sequencedValues().stream().flatMap(Collection::stream).collect(Collectors.toUnmodifiableSet());
     }
 
     /**