💚 fix CI and #1521

include/nlohmann/detail/json_ref.hpp

@@ -35,7 +35,7 @@ class json_ref
           is_rvalue(true) {}
 
     // class should be movable only
-    json_ref(json_ref&&) noexcept = default;
+    json_ref(json_ref&&) = default;
     json_ref(const json_ref&) = delete;
     json_ref& operator=(const json_ref&) = delete;
     json_ref& operator=(json_ref&&) = delete;