dense_map: iterator_concept

src/entt/container/dense_map.hpp

@@ -69,6 +69,7 @@ public:
     using reference = value_type;
     using difference_type = std::ptrdiff_t;
     using iterator_category = std::input_iterator_tag;
+    using iterator_concept = std::random_access_iterator_tag;
 
     constexpr dense_map_iterator() noexcept
         : it{} {}
@@ -190,6 +191,7 @@ public:
     using reference = value_type;
     using difference_type = std::ptrdiff_t;
     using iterator_category = std::input_iterator_tag;
+    using iterator_concept = std::forward_iterator_tag;
 
     constexpr dense_map_local_iterator() noexcept
         : it{},